diff options
Diffstat (limited to 'lib/tsan/lit_tests/sigsuspend.cc')
-rw-r--r-- | lib/tsan/lit_tests/sigsuspend.cc | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/sigsuspend.cc b/lib/tsan/lit_tests/sigsuspend.cc new file mode 100644 index 000000000000..78d507fa0af5 --- /dev/null +++ b/lib/tsan/lit_tests/sigsuspend.cc @@ -0,0 +1,38 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s +#include <assert.h> +#include <stdlib.h> +#include <signal.h> +#include <unistd.h> +#include <stdio.h> + +static bool signal_handler_ran = false; + +void do_nothing_signal_handler(int signum) { + write(1, "HANDLER\n", 8); + signal_handler_ran = true; +} + +int main() { + const int kSignalToTest = SIGSYS; + assert(SIG_ERR != signal(kSignalToTest, do_nothing_signal_handler)); + sigset_t empty_set; + assert(0 == sigemptyset(&empty_set)); + sigset_t one_signal = empty_set; + assert(0 == sigaddset(&one_signal, kSignalToTest)); + sigset_t old_set; + assert(0 == sigprocmask(SIG_BLOCK, &one_signal, &old_set)); + raise(kSignalToTest); + assert(!signal_handler_ran); + sigset_t all_but_one; + assert(0 == sigfillset(&all_but_one)); + assert(0 == sigdelset(&all_but_one, kSignalToTest)); + sigsuspend(&all_but_one); + assert(signal_handler_ran); + + // Restore the original set. + assert(0 == sigprocmask(SIG_SETMASK, &old_set, NULL)); + printf("DONE"); +} + +// CHECK: HANDLER +// CHECK: DONE |