mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-03 18:13:01 +00:00
1175b7c1a3
also allows us to drop the loop that was supposed to give the child a chance to exit as the pclose will wait properly for the child. Fix from Ivo Raisr on BZ#331255 git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13813
53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static struct sigaction oldChildHandlerData;
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void theHandler(int arg)
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{
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printf("handled %s\n", arg == SIGCHLD ? "SIGCHLD" : "?!unexpected signal?!" );
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}
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void setupHandlers()
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{
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struct sigaction act;
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act.sa_handler=theHandler;
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sigemptyset(&(act.sa_mask));
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sigaddset(&(act.sa_mask), SIGCHLD);
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// Make sure we don't block this signal. gdb tends to do that :-(
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sigprocmask(SIG_UNBLOCK, &(act.sa_mask), 0);
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act.sa_flags = SA_NOCLDSTOP;
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// CC: take care of SunOS which automatically restarts interrupted system
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// calls (and thus does not have SA_RESTART)
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#ifdef SA_RESTART
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act.sa_flags |= SA_RESTART;
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#endif
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sigaction( SIGCHLD, &act, &oldChildHandlerData );
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act.sa_handler=SIG_IGN;
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sigemptyset(&(act.sa_mask));
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sigaddset(&(act.sa_mask), SIGPIPE);
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act.sa_flags = 0;
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sigaction( SIGPIPE, &act, 0L);
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}
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int main()
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{
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char buffer[200];
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setupHandlers();
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FILE *p = popen("echo Hallo World", "r");
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while (!feof(p)) {
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int n = fread(buffer, 200, 1, p);
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__attribute__((unused)) ssize_t nw = write(2, buffer, n);
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}
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pclose(p);
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return 0;
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}
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