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[BZ #838]
* malloc/arena.c (ptmalloc_lock_all): If global lock already taken by the same thread, just bump the counter. (ptmalloc_unlock_all): If counter for recursive locks hasn't reached zero, don't do anything else. * malloc/Makefile (tests): Add tst-mallocfork. * malloc/tst-mallocfork.c: New file.
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Ulrich Drepper
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Sep 27, 2005
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/* Derived from the test case in | ||
http://sourceware.org/bugzilla/show_bug.cgi?id=838. */ | ||
#include <assert.h> | ||
#include <errno.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <unistd.h> | ||
#include <sys/types.h> | ||
#include <sys/wait.h> | ||
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static void | ||
sig_handler (int signum) | ||
{ | ||
pid_t child = fork (); | ||
if (child == 0) | ||
exit (0); | ||
TEMP_FAILURE_RETRY (waitpid (child, NULL, 0)); | ||
} | ||
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static int | ||
do_test (void) | ||
{ | ||
pid_t parent = getpid (); | ||
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struct sigaction action; | ||
sigemptyset (&action.sa_mask); | ||
action.sa_handler = sig_handler; | ||
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malloc (sizeof (int)); | ||
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if (sigaction (SIGALRM, &action, NULL) != 0) | ||
{ | ||
puts ("sigaction failed"); | ||
return 1; | ||
} | ||
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/* Create a child that sends the signal to be caught. */ | ||
pid_t child = fork (); | ||
if (child == 0) | ||
{ | ||
if (kill (parent, SIGALRM) == -1) | ||
perror ("kill"); | ||
exit (0); | ||
} | ||
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TEMP_FAILURE_RETRY (waitpid (child, NULL, 0)); | ||
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return 0; | ||
} | ||
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#define TEST_FUNCTION do_test () | ||
#include "../test-skeleton.c" |