66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
int Global;
|
|
|
|
void __attribute__((noinline)) foo1() {
|
|
Global = 42;
|
|
}
|
|
|
|
void __attribute__((noinline)) bar1() {
|
|
volatile int tmp = 42; (void)tmp;
|
|
foo1();
|
|
}
|
|
|
|
void __attribute__((noinline)) foo2() {
|
|
volatile int v = Global; (void)v;
|
|
}
|
|
|
|
void __attribute__((noinline)) bar2() {
|
|
volatile int tmp = 42; (void)tmp;
|
|
foo2();
|
|
}
|
|
|
|
void *Thread1(void *x) {
|
|
usleep(1000000);
|
|
bar1();
|
|
return NULL;
|
|
}
|
|
|
|
void *Thread2(void *x) {
|
|
bar2();
|
|
return NULL;
|
|
}
|
|
|
|
void StartThread(pthread_t *t, void *(*f)(void*)) {
|
|
pthread_create(t, NULL, f, NULL);
|
|
}
|
|
|
|
int main() {
|
|
pthread_t t[2];
|
|
StartThread(&t[0], Thread1);
|
|
StartThread(&t[1], Thread2);
|
|
pthread_join(t[0], NULL);
|
|
pthread_join(t[1], NULL);
|
|
return 0;
|
|
}
|
|
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK-NEXT: Write of size 4 at {{.*}} by thread 1:
|
|
// CHECK-NEXT: #0 foo1{{.*}} {{.*}}simple_stack.c:8{{(:3)?}} ({{.*}})
|
|
// CHECK-NEXT: #1 bar1{{.*}} {{.*}}simple_stack.c:13{{(:3)?}} ({{.*}})
|
|
// CHECK-NEXT: #2 Thread1{{.*}} {{.*}}simple_stack.c:27{{(:3)?}} ({{.*}})
|
|
// CHECK: Previous read of size 4 at {{.*}} by thread 2:
|
|
// CHECK-NEXT: #0 foo2{{.*}} {{.*}}simple_stack.c:17{{(:26)?}} ({{.*}})
|
|
// CHECK-NEXT: #1 bar2{{.*}} {{.*}}simple_stack.c:22{{(:3)?}} ({{.*}})
|
|
// CHECK-NEXT: #2 Thread2{{.*}} {{.*}}simple_stack.c:32{{(:3)?}} ({{.*}})
|
|
// CHECK: Thread 1 (running) created at:
|
|
// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
|
|
// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:37{{(:3)?}} ({{.*}})
|
|
// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:42{{(:3)?}} ({{.*}})
|
|
// CHECK: Thread 2 ({{.*}}) created at:
|
|
// CHECK-NEXT: #0 pthread_create {{.*}} ({{.*}})
|
|
// CHECK-NEXT: #1 StartThread{{.*}} {{.*}}simple_stack.c:37{{(:3)?}} ({{.*}})
|
|
// CHECK-NEXT: #2 main{{.*}} {{.*}}simple_stack.c:43{{(:3)?}} ({{.*}})
|