mirror of
https://git.savannah.gnu.org/git/parallel.git
synced 2024-11-22 05:57:54 +00:00
--semaphore implemented. Unittest passes.
This commit is contained in:
Ole Tange
parent
94b1c3ec57
commit
c7eeac015b
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@ -64,8 +64,8 @@
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'AM_SET_LEADING_DOT' => 1,
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'AM_SET_DEPDIR' => 1,
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'_AM_DEPENDENCIES' => 1,
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'AM_PROG_INSTALL_SH' => 1,
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'm4_include' => 1,
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'AM_PROG_INSTALL_SH' => 1,
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'_AC_AM_CONFIG_HEADER_HOOK' => 1,
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'AU_DEFUN' => 1,
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'AM_MAKE_INCLUDE' => 1
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@ -83,25 +83,25 @@
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'configure.ac'
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],
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{
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'_LT_AC_TAGCONFIG' => 1,
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'AM_PROG_F77_C_O' => 1,
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'm4_pattern_forbid' => 1,
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'_LT_AC_TAGCONFIG' => 1,
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'AC_INIT' => 1,
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'_AM_COND_IF' => 1,
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'm4_pattern_forbid' => 1,
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'AC_CANONICAL_TARGET' => 1,
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'AC_SUBST' => 1,
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'_AM_COND_IF' => 1,
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'AC_CONFIG_LIBOBJ_DIR' => 1,
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'AC_FC_SRCEXT' => 1,
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'AC_SUBST' => 1,
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'AC_CANONICAL_HOST' => 1,
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'AC_FC_SRCEXT' => 1,
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'AC_PROG_LIBTOOL' => 1,
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'AM_INIT_AUTOMAKE' => 1,
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'AC_CONFIG_SUBDIRS' => 1,
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'AM_AUTOMAKE_VERSION' => 1,
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'LT_CONFIG_LTDL_DIR' => 1,
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'AC_REQUIRE_AUX_FILE' => 1,
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'AC_CONFIG_LINKS' => 1,
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'm4_sinclude' => 1,
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'AC_REQUIRE_AUX_FILE' => 1,
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'LT_SUPPORTED_TAG' => 1,
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'm4_sinclude' => 1,
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'AM_MAINTAINER_MODE' => 1,
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'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
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'_m4_warn' => 1,
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@ -114,17 +114,17 @@
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'include' => 1,
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'AM_GNU_GETTEXT' => 1,
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'AC_LIBSOURCE' => 1,
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'AM_PROG_FC_C_O' => 1,
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'AC_CANONICAL_BUILD' => 1,
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'AM_PROG_FC_C_O' => 1,
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'AC_FC_FREEFORM' => 1,
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'AH_OUTPUT' => 1,
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'_AM_SUBST_NOTMAKE' => 1,
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'AC_CONFIG_AUX_DIR' => 1,
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'sinclude' => 1,
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'm4_pattern_allow' => 1,
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'_AM_SUBST_NOTMAKE' => 1,
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'AM_PROG_CC_C_O' => 1,
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'AC_CANONICAL_SYSTEM' => 1,
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'm4_pattern_allow' => 1,
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'sinclude' => 1,
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'AM_CONDITIONAL' => 1,
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'AC_CANONICAL_SYSTEM' => 1,
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'AC_CONFIG_HEADERS' => 1,
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'AC_DEFINE_TRACE_LITERAL' => 1,
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'm4_include' => 1,
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@ -6,17 +6,20 @@ parallel.1: parallel Makefile
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pod2man --release='$(PACKAGE_VERSION)' --center='$(PACKAGE_NAME)' \
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--section=1 $(srcdir)/parallel > $(srcdir)/parallel.1
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sem.1: sem Makefile
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sem.1: sem.pod Makefile
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pod2man --release='$(PACKAGE_VERSION)' --center='$(PACKAGE_NAME)' \
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--section=1 $(srcdir)/sem > $(srcdir)/sem.1
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--section=1 $(srcdir)/sem.pod > $(srcdir)/sem.1
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parallel.html: parallel Makefile
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pod2html $(srcdir)/parallel > $(srcdir)/parallel.html
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rm $(srcdir)/pod2htm*
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sem.html: sem Makefile
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pod2html $(srcdir)/sem > $(srcdir)/sem.html
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sem.html: sem.pod Makefile
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pod2html $(srcdir)/sem.pod > $(srcdir)/sem.html
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rm $(srcdir)/pod2htm*
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sem: parallel
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ln -s parallel sem
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DISTCLEANFILES = parallel.1 sem.1 parallel.html sem.html
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EXTRA_DIST = parallel sem parallel.1 sem.1 parallel.html sem.html
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@ -447,18 +447,21 @@ parallel.1: parallel Makefile
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pod2man --release='$(PACKAGE_VERSION)' --center='$(PACKAGE_NAME)' \
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--section=1 $(srcdir)/parallel > $(srcdir)/parallel.1
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sem.1: sem Makefile
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sem.1: sem.pod Makefile
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pod2man --release='$(PACKAGE_VERSION)' --center='$(PACKAGE_NAME)' \
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--section=1 $(srcdir)/sem > $(srcdir)/sem.1
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--section=1 $(srcdir)/sem.pod > $(srcdir)/sem.1
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parallel.html: parallel Makefile
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pod2html $(srcdir)/parallel > $(srcdir)/parallel.html
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rm $(srcdir)/pod2htm*
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sem.html: sem Makefile
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pod2html $(srcdir)/sem > $(srcdir)/sem.html
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sem.html: sem.pod Makefile
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pod2html $(srcdir)/sem.pod > $(srcdir)/sem.html
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rm $(srcdir)/pod2htm*
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sem: parallel
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ln -s parallel sem
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
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# Otherwise a system limit (for SysV at least) may be exceeded.
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.NOEXPORT:
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86
src/parallel
86
src/parallel
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@ -1987,16 +1987,52 @@ use strict;
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do_not_reap();
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parse_options();
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init_run_jobs();
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start_more_jobs();
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if($Global::semaphore) {
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run_as_semaphore();
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} else {
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start_more_jobs();
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}
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reap_if_needed();
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drain_job_queue();
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cleanup();
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if($Global::semaphore) {
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exit $Global::exitstatus;
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}
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if($::opt_halt_on_error) {
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wait_and_exit($Global::halt_on_error_exitstatus);
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} else {
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wait_and_exit(min($Global::exitstatus,254));
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}
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sub run_as_semaphore {
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my $sem = Semaphore->new($Semaphore::name,$Global::host{':'}{'max_no_of_running'});
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$sem->acquire();
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debug("run");
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$Global::argfile = open_or_exit("/dev/null");
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unget_arg("");
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if($Semaphore::fg) {
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start_more_jobs();
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$sem->release();
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} else {
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# If run in the background, the PID will change
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# therefore release and re-acquire the semaphore
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$sem->release();
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if(not fork()) {
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# child
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# Get a semaphore for this pid
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my $child_sem = Semaphore->new($Semaphore::name,$Global::host{':'}{'max_no_of_running'});
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$child_sem->acquire();
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start_more_jobs();
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reap_if_needed();
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drain_job_queue();
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cleanup();
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$child_sem->release();
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} else {
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exit(0);
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}
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}
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}
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sub parse_options {
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# Returns: N/A
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# Defaults:
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@ -2209,6 +2245,22 @@ sub parse_options {
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print STDERR ("Warning: using -X or -m with --sshlogin may fail\n");
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}
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# Semaphore defaults
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# Must be done before computing number of processes
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$Global::semaphore ||= ($0 =~ m:(^|/)sem$:); # called as 'sem'
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if($Global::semaphore) {
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$Semaphore::timeout = $::opt_semaphoretimeout || 0;
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if(defined $::opt_semaphorename) {
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$Semaphore::name = $::opt_semaphorename;
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} else {
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$Semaphore::name = `tty`;
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chomp $Semaphore::name;
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}
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$Semaphore::fg = $::opt_fg;
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$Semaphore::wait = $::opt_wait;
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$Global::default_simultaneous_sshlogins = 1;
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}
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# Needs to be done after setting $Global::command and $Global::command_line_max_len
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# as '-m' influences the number of commands that needs to be run
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if(defined $::opt_P) {
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@ -2222,14 +2274,6 @@ sub parse_options {
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$Global::default_simultaneous_sshlogins;
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}
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}
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# Semaphore defaults
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if($Global::semaphore) {
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$Semaphore::timeout = $::opt_semaphoretimeout || 0;
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$Semaphore::name = $::opt_semaphorename || `tty`;
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$Semaphore::fg = $::opt_fg;
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$Semaphore::wait = $::opt_wait;
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}
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}
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sub read_args_from_command_line {
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@ -2768,12 +2812,14 @@ sub processes_available_by_system_limit {
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do {
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$system_limit++;
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if(not $Global::semaphore) {
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# If there are no more command lines, then we have a process
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# per command line, so no need to go further
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($next_command_line, $args_ref) = get_command_line();
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if(defined $next_command_line) {
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push(@command_lines, $next_command_line, $args_ref);
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}
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}
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# Every simultaneous process uses 2 filehandles when grouping
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$more_filehandles = open($fh{$system_limit*2},"</dev/null")
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@ -2792,7 +2838,7 @@ sub processes_available_by_system_limit {
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} else {
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$max_system_proc_reached = 1;
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}
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debug("Time to fork ten procs ", time-$time, " process ", $system_limit);
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debug("Time to fork ten procs: ", time-$time, " (processes so far: ", $system_limit,")\n");
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if(time-$time > 2) {
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# It took more than 2 second to fork ten processes. We should stop forking.
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# Let us give the system a little slack
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@ -2802,7 +2848,7 @@ sub processes_available_by_system_limit {
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$spawning_too_slow = 1;
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}
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} while($system_limit < $wanted_processes
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and defined $next_command_line
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and (defined $next_command_line or $Global::semaphore)
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and $more_filehandles
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and not $max_system_proc_reached
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and not $spawning_too_slow);
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@ -4237,6 +4283,8 @@ sub new {
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my $class = shift;
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my $id = shift;
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my $count = shift;
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$id=~s/([^-_a-z0-9])/unpack("H*",$1)/ige; # Convert non-word chars to hex
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$id="id-".$id; # To distinguish it from a process id
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my $parallel_locks = $ENV{'HOME'}."/.parallel/semaphores";
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-d $parallel_locks or mkdir $parallel_locks;
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my $lockdir = "$parallel_locks/$id";
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@ -4249,7 +4297,7 @@ sub new {
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'idfile' => $lockdir."/".$id,
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'pid' => $$,
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'pidfile' => $lockdir."/".$$,
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'count' => $count
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'count' => $count + 1 # nlinks returns a link for the 'id-' as well
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}, ref($class) || $class;
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}
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@ -4260,7 +4308,7 @@ sub acquire {
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::debug("Remove dead locks");
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my $lockdir = $self->{'lockdir'};
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for my $d (<$lockdir/*>) {
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$d =~ m:$lockdir/([0-9]+):o or next;
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$d =~ m:$lockdir/([0-9]+)$:o or next;
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if(not kill 0, $1) {
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::debug("Dead: $d");
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unlink $d;
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@ -4273,7 +4321,7 @@ sub acquire {
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sleep 1;
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# TODO if timeout: last
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}
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::debug("got $self->{'pid'}");
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::debug("acquired $self->{'pid'}\n");
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}
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sub release {
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@ -4288,7 +4336,7 @@ sub release {
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}
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$self->unlock();
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}
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::debug("released $self->{'pid'}");
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::debug("released $self->{'pid'}\n");
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}
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@ -4297,6 +4345,7 @@ sub atomic_link_if_count_less_than {
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my ($self) = shift;
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my ($retval) = 0;
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$self->lock();
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::debug($self->nlinks()."<".$self->{'count'});
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if($self->nlinks() < $self->{'count'}) {
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-d $self->{'lockdir'} || mkdir $self->{'lockdir'};
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if(not -e $self->{'idfile'}) {
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@ -4313,6 +4362,7 @@ sub atomic_link_if_count_less_than {
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sub nlinks {
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my $self = shift;
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if(-e $self->{'idfile'}) {
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::debug("nlinks".((stat(_))[3])."\n");
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return (stat(_))[3];
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} else {
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return 0;
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@ -4336,10 +4386,10 @@ sub unlock {
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my $self = shift;
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unlink $self->{'lockfile'};
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close $self->{'lockfh'};
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::debug("unlocked");
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::debug("unlocked\n");
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}
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# Keep perl -w happy
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$Private::control_path = $Semaphore::timeout = $Semaphore::name =
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$Semaphore::wait = $Semaphore::fg = 0;
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$Private::control_path = $Semaphore::timeout =
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$Semaphore::wait = 0;
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431
src/sem
431
src/sem
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@ -1,431 +0,0 @@
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#!/usr/bin/perl -w
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=head1 NAME
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sem - semaphore for executing shell command lines in parallel
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=head1 SYNOPSIS
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B<sem> [--fg] [--id <id>] [--timeout <secs>] [--count <num>] [--wait] command
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=head1 DESCRIPTION
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GNU B<sem> is a tool for executing shell commands in parallel. GNU
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B<sem> acts as a counting semaphore. When GNU B<sem> is called with
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command it will start the command in the background. When I<num>
|
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number of commands are running in the background, GNU B<sem> will wait
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for one of these to complete before starting another command.
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|
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GNU B<sem> is a supplement to GNU B<parallel> and can be used if the
|
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loop is too complex to put into a GNU B<parallel> command.
|
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|
||||
Before looking at the options you may want to check out the examples
|
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after the list of options. That will give you an idea of what GNU
|
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B<sem> is capable of.
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=head1 OPTIONS
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|
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=over 9
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|
||||
=item I<command>
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|
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Command to execute. The command may be followed by arguments for the command.
|
||||
|
||||
|
||||
=item B<--count> I<N>
|
||||
|
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=item B<-j> I<N>
|
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|
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Run up to N commands in parallel. Default is 1 thus acting like a
|
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mutex.
|
||||
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|
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=item B<--id> I<id>
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|
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=item B<-i> I<id>
|
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|
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Use B<id> as the name of the semaphore. Default is the name of the
|
||||
controlling tty (output from B<tty>).
|
||||
|
||||
The default normally works as expected when used interactively, but
|
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when used in a script I<id> should be set. $$ is often a good value.
|
||||
|
||||
|
||||
=item B<--fg>
|
||||
|
||||
Do not put command in background.
|
||||
|
||||
|
||||
=item B<--timeout> I<secs> (not implemented)
|
||||
|
||||
=item B<-t> I<secs> (not implemented)
|
||||
|
||||
If the semaphore is not released within I<secs> seconds, take it anyway.
|
||||
|
||||
|
||||
=item B<--wait>
|
||||
|
||||
=item B<-w>
|
||||
|
||||
Wait for all commands to complete.
|
||||
|
||||
=back
|
||||
|
||||
=head1 EXAMPLE: Gzipping *.log
|
||||
|
||||
for i in `ls *.log` ; do
|
||||
echo $i
|
||||
sem gzip $i ";" echo done
|
||||
done
|
||||
sem -w
|
||||
|
||||
|
||||
=head1 BUGS
|
||||
|
||||
Quoting and composed commands are not working.
|
||||
|
||||
|
||||
=head1 REPORTING BUGS
|
||||
|
||||
Report bugs to <bug-parallel@gnu.org>.
|
||||
|
||||
|
||||
=head1 AUTHOR
|
||||
|
||||
Copyright (C) 2010 Ole Tange, http://ole.tange.dk and Free Software
|
||||
Foundation, Inc.
|
||||
|
||||
|
||||
=head1 LICENSE
|
||||
|
||||
Copyright (C) 2010 Free Software Foundation, Inc.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
at your option any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
=head2 Documentation license I
|
||||
|
||||
Permission is granted to copy, distribute and/or modify this documentation
|
||||
under the terms of the GNU Free Documentation License, Version 1.3 or
|
||||
any later version published by the Free Software Foundation; with no
|
||||
Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
|
||||
Texts. A copy of the license is included in the file fdl.txt.
|
||||
|
||||
=head2 Documentation license II
|
||||
|
||||
You are free:
|
||||
|
||||
=over 9
|
||||
|
||||
=item B<to Share>
|
||||
|
||||
to copy, distribute and transmit the work
|
||||
|
||||
=item B<to Remix>
|
||||
|
||||
to adapt the work
|
||||
|
||||
=back
|
||||
|
||||
Under the following conditions:
|
||||
|
||||
=over 9
|
||||
|
||||
=item B<Attribution>
|
||||
|
||||
You must attribute the work in the manner specified by the author or
|
||||
licensor (but not in any way that suggests that they endorse you or
|
||||
your use of the work).
|
||||
|
||||
=item B<Share Alike>
|
||||
|
||||
If you alter, transform, or build upon this work, you may distribute
|
||||
the resulting work only under the same, similar or a compatible
|
||||
license.
|
||||
|
||||
=back
|
||||
|
||||
With the understanding that:
|
||||
|
||||
=over 9
|
||||
|
||||
=item B<Waiver>
|
||||
|
||||
Any of the above conditions can be waived if you get permission from
|
||||
the copyright holder.
|
||||
|
||||
=item B<Public Domain>
|
||||
|
||||
Where the work or any of its elements is in the public domain under
|
||||
applicable law, that status is in no way affected by the license.
|
||||
|
||||
=item B<Other Rights>
|
||||
|
||||
In no way are any of the following rights affected by the license:
|
||||
|
||||
=over 2
|
||||
|
||||
=item *
|
||||
|
||||
Your fair dealing or fair use rights, or other applicable
|
||||
copyright exceptions and limitations;
|
||||
|
||||
=item *
|
||||
|
||||
The author's moral rights;
|
||||
|
||||
=item *
|
||||
|
||||
Rights other persons may have either in the work itself or in
|
||||
how the work is used, such as publicity or privacy rights.
|
||||
|
||||
=back
|
||||
|
||||
=back
|
||||
|
||||
=over 9
|
||||
|
||||
=item B<Notice>
|
||||
|
||||
For any reuse or distribution, you must make clear to others the
|
||||
license terms of this work.
|
||||
|
||||
=back
|
||||
|
||||
A copy of the full license is included in the file as cc-by-sa.txt.
|
||||
|
||||
=head1 DEPENDENCIES
|
||||
|
||||
GNU B<sem> uses Perl, and the Perl modules Getopt::Long,
|
||||
Symbol, Fcntl.
|
||||
|
||||
|
||||
=head1 SEE ALSO
|
||||
|
||||
B<parallel>(1)
|
||||
|
||||
=cut
|
||||
|
||||
use strict;
|
||||
use Symbol qw(gensym);
|
||||
use Getopt::Long;
|
||||
|
||||
Getopt::Long::Configure ("bundling","require_order");
|
||||
GetOptions("debug|D" => \$::opt_D,
|
||||
"id|i=s" => \$::opt_id,
|
||||
"count|j=i" => \$::opt_count,
|
||||
"fg" => \$::opt_fg,
|
||||
"timeout|t=i" => \$::opt_timeout,
|
||||
"version" => \$::opt_version,
|
||||
"wait|w" => \$::opt_wait,
|
||||
) || die_usage();
|
||||
$Global::debug = $::opt_D;
|
||||
$Global::version = 20100814;
|
||||
$Global::progname = 'sem';
|
||||
|
||||
my $count = 1; # Default 1 = mutex
|
||||
if($::opt_count) {
|
||||
$count = $::opt_count + 1;
|
||||
}
|
||||
if($::opt_wait) {
|
||||
$count = 1;
|
||||
}
|
||||
my $id = $::opt_id;
|
||||
my $fg = $::opt_fg || $::opt_wait;
|
||||
$::opt_timeout = $::opt_timeout;
|
||||
if(defined $::opt_version) {
|
||||
version();
|
||||
}
|
||||
|
||||
if(not defined $id) {
|
||||
# $id = getppid();
|
||||
# does not work with:
|
||||
# find . -name '*linux*' -exec sem -j1000 "sleep 3; echo `tty` '{}'" \; ; sem --wait echo done
|
||||
$id = `tty`;
|
||||
}
|
||||
$id = "id-$id";
|
||||
$id=~s/([^-_a-z0-9])/unpack("H*",$1)/ige; # Convert non-word chars to hex
|
||||
my $sem = Semaphore->new($id,$count);
|
||||
$sem->acquire();
|
||||
debug("run");
|
||||
if($fg) {
|
||||
system @ARGV;
|
||||
$sem->release();
|
||||
} else {
|
||||
# If run in the background, the PID will change
|
||||
# therefore release and re-acquire the semaphore
|
||||
$sem->release();
|
||||
if(not fork()) {
|
||||
# child
|
||||
# Get a semaphore for this pid
|
||||
my $child_sem = Semaphore->new($id,$count);
|
||||
$child_sem->acquire();
|
||||
system @ARGV;
|
||||
$child_sem->release();
|
||||
}
|
||||
}
|
||||
|
||||
sub version {
|
||||
# Returns: N/A
|
||||
print join("\n",
|
||||
"GNU $Global::progname $Global::version",
|
||||
"Copyright (C) 2010 Ole Tange and Free Software Foundation, Inc.",
|
||||
"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>",
|
||||
"This is free software: you are free to change and redistribute it.",
|
||||
"GNU $Global::progname comes with no warranty.",
|
||||
"",
|
||||
"Web site: http://www.gnu.org/software/parallel\n"
|
||||
);
|
||||
}
|
||||
|
||||
sub usage {
|
||||
# Returns: N/A
|
||||
print "Usage:\n";
|
||||
print "$Global::progname [options] [command [arguments]] < list_of_arguments)\n";
|
||||
print "$Global::progname [options] [command [arguments]] ::: arguments\n";
|
||||
print "$Global::progname [options] [command [arguments]] :::: argfile(s)\n";
|
||||
print "\n";
|
||||
print "See 'man $Global::progname' for the options\n";
|
||||
}
|
||||
|
||||
sub die_usage {
|
||||
usage();
|
||||
exit(255);
|
||||
}
|
||||
|
||||
sub debug {
|
||||
# Returns: N/A
|
||||
$Global::debug or return;
|
||||
@_ = grep { defined $_ ? $_ : "" } @_;
|
||||
print map {$_,"\n" } @_;
|
||||
}
|
||||
|
||||
package Semaphore;
|
||||
|
||||
# This package provides a counting semaphore
|
||||
#
|
||||
# If a process dies without releasing the semaphore the next process
|
||||
# that needs that entry will clean up dead semaphores
|
||||
#
|
||||
# The semaphores are stored in ~/.parallel/semaphores/id-<name> Each
|
||||
# file in ~/.parallel/semaphores/id-<name>/ is the process ID of the
|
||||
# process holding the entry. If the process dies, the entry can be
|
||||
# taken by another process.
|
||||
|
||||
use Fcntl qw(:DEFAULT :flock);
|
||||
|
||||
sub new {
|
||||
my $class = shift;
|
||||
my $id = shift;
|
||||
my $count = shift;
|
||||
my $parallel_locks = $ENV{'HOME'}."/.parallel/semaphores";
|
||||
-d $parallel_locks or mkdir $parallel_locks;
|
||||
my $lockdir = "$parallel_locks/$id";
|
||||
my $lockfile = $lockdir.".lock";
|
||||
return bless {
|
||||
'lockfile' => $lockfile,
|
||||
'lockfh' => Symbol::gensym(),
|
||||
'lockdir' => $lockdir,
|
||||
'id' => $id,
|
||||
'idfile' => $lockdir."/".$id,
|
||||
'pid' => $$,
|
||||
'pidfile' => $lockdir."/".$$,
|
||||
'count' => $count
|
||||
}, ref($class) || $class;
|
||||
}
|
||||
|
||||
sub acquire {
|
||||
my $self = shift;
|
||||
while(1) {
|
||||
$self->atomic_link_if_count_less_than() and last;
|
||||
::debug("Remove dead locks");
|
||||
my $lockdir = $self->{'lockdir'};
|
||||
for my $d (<$lockdir/*>) {
|
||||
$d =~ m:$lockdir/([0-9]+):o or next;
|
||||
if(not kill 0, $1) {
|
||||
::debug("Dead: $d");
|
||||
unlink $d;
|
||||
} else {
|
||||
::debug("Alive: $d");
|
||||
}
|
||||
}
|
||||
# try again
|
||||
$self->atomic_link_if_count_less_than() and last;
|
||||
sleep 1;
|
||||
# TODO if timeout: last
|
||||
}
|
||||
::debug("got $self->{'pid'}");
|
||||
}
|
||||
|
||||
sub release {
|
||||
my ($self) = shift;
|
||||
unlink $self->{'pidfile'};
|
||||
if($self->nlinks() == 1) {
|
||||
# This is the last link, so atomic cleanup
|
||||
$self->lock();
|
||||
if($self->nlinks() == 1) {
|
||||
unlink $self->{'idfile'};
|
||||
rmdir $self->{'lockdir'};
|
||||
}
|
||||
$self->unlock();
|
||||
}
|
||||
::debug("released $self->{'pid'}");
|
||||
}
|
||||
|
||||
|
||||
sub atomic_link_if_count_less_than {
|
||||
# Link $file1 to $file2 if nlinks to $file1 < $count
|
||||
my ($self) = shift;
|
||||
my ($retval) = 0;
|
||||
$self->lock();
|
||||
if($self->nlinks() < $count) {
|
||||
-d $self->{'lockdir'} || mkdir $self->{'lockdir'};
|
||||
if(not -e $self->{'idfile'}) {
|
||||
open (A, ">", $self->{'idfile'}) or die ">$self->{'idfile'}";
|
||||
close A;
|
||||
}
|
||||
$retval = link $self->{'idfile'}, $self->{'pidfile'};
|
||||
}
|
||||
$self->unlock();
|
||||
::debug("atomic $retval");
|
||||
return $retval;
|
||||
}
|
||||
|
||||
sub nlinks {
|
||||
my $self = shift;
|
||||
if(-e $self->{'idfile'}) {
|
||||
return (stat(_))[3];
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
sub lock {
|
||||
my ($self) = shift;
|
||||
open $self->{'lockfh'}, ">", $self->{'lockfile'}
|
||||
or die "Can't open semaphore file $self->{'lockfile'}: $!";
|
||||
chmod 0666, $self->{'lockfile'}; # assuming you want it a+rw
|
||||
while(not flock $self->{'lockfh'}, LOCK_EX()|LOCK_NB()) {
|
||||
::debug("Cannot lock $self->{'lockfile'}");
|
||||
# TODO if timeout: last
|
||||
sleep 1;
|
||||
}
|
||||
::debug("locked $self->{'lockfile'}");
|
||||
}
|
||||
|
||||
sub unlock {
|
||||
my $self = shift;
|
||||
unlink $self->{'lockfile'};
|
||||
close $self->{'lockfh'};
|
||||
::debug("unlocked");
|
||||
}
|
||||
|
|
@ -8,6 +8,7 @@ unittest: ../src/parallel tests-to-run/* wanted-results/*
|
|||
echo 1+2 | bc | mop || (echo bc is required for unittest; /bin/false)
|
||||
stdout gawk | mop || (echo gawk is required for unittest; /bin/false)
|
||||
expect -c 'spawn cat; puts "expect is installed"' || (echo expect is required for unittest; /bin/false)
|
||||
echo | pv -qL 10 || (echo pv is required for unittest; /bin/false)
|
||||
time sh Start.sh
|
||||
date
|
||||
|
||||
|
|
|
|||
|
|
@ -1,9 +1,32 @@
|
|||
#!/bin/bash
|
||||
|
||||
echo '### Test mutex. This should take 3 seconds'
|
||||
sem 'sleep 1; echo foo'
|
||||
sem 'sleep 1; echo foo'
|
||||
sem 'sleep 1; echo foo'
|
||||
echo '### Test mutex. This should not mix output'
|
||||
parallel -u --semaphore seq 1 10 '|' pv -qL 20
|
||||
parallel -u --semaphore seq 11 20 '|' pv -qL 100
|
||||
parallel --semaphore --wait
|
||||
echo done
|
||||
|
||||
echo '### Test default id = --id `tty`'
|
||||
parallel --id `tty` -u --semaphore seq 1 10 '|' pv -qL 20
|
||||
parallel -u --semaphore seq 11 20 '|' pv -qL 100
|
||||
parallel --id `tty` --semaphore --wait
|
||||
echo done
|
||||
|
||||
echo '### Test semaphore 2 jobs running simultaneously'
|
||||
parallel -u -j2 --semaphore 'echo job1; sleep 0.5; echo job1'
|
||||
parallel -u -j2 --semaphore 'echo job2; sleep 0.5; echo job2'
|
||||
parallel --semaphore --wait
|
||||
echo done
|
||||
|
||||
echo '### Test if parallel invoked as sem will run parallel --semaphore'
|
||||
sem -u -j2 'echo job1; sleep 0.5; echo job1'
|
||||
sem -u -j2 'echo job2; sleep 0.5; echo job2'
|
||||
sem --wait
|
||||
echo done
|
||||
|
||||
|
||||
echo '### Test similar example as from man page'
|
||||
for i in 0.5 0.1 0.2 0.3 0.4 ; do
|
||||
echo $i
|
||||
sem -j+0 sleep $i ";" echo done $i
|
||||
done
|
||||
sem --wait
|
||||
|
|
|
|||
|
|
@ -10,7 +10,7 @@ echo '### Test of --trim illegal'
|
|||
stdout parallel --trim fj ::: echo
|
||||
|
||||
echo '### Test of eof string on :::'
|
||||
parallel -E ole echo ::: foo ole bar
|
||||
parallel -k -E ole echo ::: foo ole bar
|
||||
|
||||
echo '### Test of ignore-empty string on :::'
|
||||
parallel -k -r echo ::: foo '' ole bar
|
||||
|
|
|
|||
|
|
@ -1,4 +1,67 @@
|
|||
### Test mutex. This should take 3 seconds
|
||||
foo
|
||||
foo
|
||||
foo
|
||||
### Test mutex. This should not mix output
|
||||
1
|
||||
2
|
||||
3
|
||||
4
|
||||
5
|
||||
6
|
||||
7
|
||||
8
|
||||
9
|
||||
10
|
||||
11
|
||||
12
|
||||
13
|
||||
14
|
||||
15
|
||||
16
|
||||
17
|
||||
18
|
||||
19
|
||||
20
|
||||
done
|
||||
### Test default id = --id `tty`
|
||||
1
|
||||
2
|
||||
3
|
||||
4
|
||||
5
|
||||
6
|
||||
7
|
||||
8
|
||||
9
|
||||
10
|
||||
11
|
||||
12
|
||||
13
|
||||
14
|
||||
15
|
||||
16
|
||||
17
|
||||
18
|
||||
19
|
||||
20
|
||||
done
|
||||
### Test semaphore 2 jobs running simultaneously
|
||||
job1
|
||||
job2
|
||||
job1
|
||||
job2
|
||||
done
|
||||
### Test if parallel invoked as sem will run parallel --semaphore
|
||||
job1
|
||||
job2
|
||||
job1
|
||||
job2
|
||||
done
|
||||
### Test similar example as from man page
|
||||
0.5
|
||||
0.1
|
||||
0.2
|
||||
done 0.1
|
||||
0.3
|
||||
done 0.5
|
||||
done 0.2
|
||||
0.4
|
||||
done 0.3
|
||||
done 0.4
|
||||
|
|
|
|||
Loading…
Reference in a new issue