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New files to implement atomic operations for different platforms. Fixes

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2004-02-26  Sebastian Wilhelmi  <seppi@seppi.de>

	* glib/gatomic.c, glib/gatomic.h: New files to implement atomic
	operations for different platforms. Fixes bug #63621.

	* glib/glib.h: Include gatomic.h.

	* configure.in: Add test for assembler routines for atomic operations.

	* glib/Makefile.am: Add gatomic.c, gatomic.h.

	* tests/Makefile.am, tests/atomic-test.c: Unit test for atomic
	operations.

	* glib/glib-overrides.txt, glib/glib-sections.txt,
	glib/glib-docs.sgml, glib/tmpl/atomic_operations.sgml: Add docs
	for atomic operations.
This commit is contained in:
Sebastian Wilhelmi
2004-02-26 14:30:35 +00:00
committed by Sebastian Wilhelmi
parent fc9afe0d21
commit dbbb29f608
18 changed files with 1171 additions and 0 deletions
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2
tests/Makefile.am
View File

@@ -64,6 +64,7 @@ timeloop_closure_LDADD = $(libglib) $(libgobject)
endif
test_programs = \
atomic-test \
array-test \
$(CXX_TEST) \
child-test \
@@ -115,6 +116,7 @@ progs_ldadd = $(EFENCE) $(libglib) $(EFENCE)
thread_ldadd = $(libgthread) $(G_THREAD_LIBS) $(progs_ldadd)
module_ldadd = $(libgmodule) $(G_MODULE_LIBS) $(progs_ldadd)
atomic_test_LDADD = $(progs_ldadd)
array_test_LDADD = $(progs_ldadd)
child_test_LDADD = $(thread_ldadd)
completion_test_LDADD = $(progs_ldadd)

57
tests/atomic-test.c Normal file
View File

@@ -0,0 +1,57 @@
#undef G_DISABLE_ASSERT
#undef G_LOG_DOMAIN
#include <glib.h>
/* Obviously we can't test that the operations are atomic, but we can
* at least test, that they do, what they ought to do */
int
main (int argc,
char *argv[])
{
gint i;
gint32 atomic = -5;
gpointer atomic_pointer = NULL;
gpointer biggest_pointer = atomic_pointer - 1;
for (i = 0; i < 15; i++)
g_atomic_int_inc (&atomic);
g_assert (atomic == 10);
for (i = 0; i < 9; i++)
g_assert (!g_atomic_int_dec_and_test (&atomic));
g_assert (g_atomic_int_dec_and_test (&atomic));
g_assert (atomic == 0);
g_assert (g_atomic_int_exchange_and_add (&atomic, 5) == 0);
g_assert (atomic == 5);
g_assert (g_atomic_int_exchange_and_add (&atomic, -10) == 5);
g_assert (atomic == -5);
g_atomic_int_add (&atomic, 20);
g_assert (atomic == 15);
g_atomic_int_add (&atomic, -35);
g_assert (atomic == -20);
g_assert (atomic == g_atomic_int_get (&atomic));
g_assert (g_atomic_int_compare_and_exchange (&atomic, -20, 20));
g_assert (atomic == 20);
g_assert (!g_atomic_int_compare_and_exchange (&atomic, 42, 12));
g_assert (atomic == 20);
g_assert (g_atomic_pointer_compare_and_exchange (&atomic_pointer,
NULL, biggest_pointer));
g_assert (atomic_pointer == biggest_pointer);
g_assert (atomic_pointer == g_atomic_pointer_get (&atomic_pointer));
g_assert (g_atomic_pointer_compare_and_exchange (&atomic_pointer,
biggest_pointer, NULL));
g_assert (atomic_pointer == NULL);
return 0;
}