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Add synchronization to TestWatchLocation. 

Summary:
There was no guarantee that the three threads haven't already exited by the
time the watchpoint is set.

Reviewers: ovyalov

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D7916

llvm-svn: 230691
This commit is contained in:
Chaoren Lin 2015-02-26 21:31:27 +00:00
parent 7bd840d058
commit 3011680752
1 changed files with 10 additions and 0 deletions
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10
lldb/test/functionalities/watchpoint/hello_watchlocation/main.cpp
View File

@ -18,6 +18,8 @@ pthread_t g_thread_1 = NULL;
pthread_t g_thread_2 = NULL;
pthread_t g_thread_3 = NULL;
pthread_barrier_t g_barrier;
char *g_char_ptr = NULL;
void
@ -52,6 +54,8 @@ thread_func (void *arg)
uint32_t thread_index = *((uint32_t *)arg);
printf ("%s (thread index = %u) startng...\n", __FUNCTION__, thread_index);
pthread_barrier_wait(&g_barrier);
uint32_t count = 0;
uint32_t val;
while (count++ < 15)
@ -84,17 +88,23 @@ int main (int argc, char const *argv[])
g_char_ptr = (char *)malloc (1);
*g_char_ptr = 0;
pthread_barrier_init(&g_barrier, NULL, 4);
// Create 3 threads
err = ::pthread_create (&g_thread_1, NULL, thread_func, &thread_index_1);
err = ::pthread_create (&g_thread_2, NULL, thread_func, &thread_index_2);
err = ::pthread_create (&g_thread_3, NULL, thread_func, &thread_index_3);
printf ("Before turning all three threads loose...\n"); // Set break point at this line.
pthread_barrier_wait(&g_barrier);
// Join all of our threads
err = ::pthread_join (g_thread_1, &thread_result);
err = ::pthread_join (g_thread_2, &thread_result);
err = ::pthread_join (g_thread_3, &thread_result);
pthread_barrier_destroy(&g_barrier);
free(g_char_ptr);
return 0;
}