Files
RedBear-OS/local/recipes/dev/libclc/source/compiler-rt/test/tsan/stress.cpp
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

103 lines
2.7 KiB
C++

// This run stresses global reset happenning concurrently with everything else.
// RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=flush_memory_ms=1:flush_symbolizer_ms=1:memory_limit_mb=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NORACE
// This run stresses race reporting happenning concurrently with everything else.
// RUN: %clangxx_tsan -O1 %s -DRACE=1 -o %t && %env_tsan_opts=suppress_equal_stacks=0 %deflake %run %t | FileCheck %s --check-prefix=CHECK-RACE
#include "test.h"
#include <fcntl.h>
#include <string.h>
volatile long stop;
long atomic, read_only, racy;
int fds[2];
__attribute__((noinline)) void *SecondaryThread(void *x) {
__atomic_fetch_add(&atomic, 1, __ATOMIC_ACQ_REL);
return NULL;
}
void *Thread(void *x) {
const int me = (long)x;
volatile long sink = 0;
int fd = -1;
while (!stop) {
// If me == 0, we do all of the following,
// otherwise only 1 type of action.
if (me == 0 || me == 1) {
// just read the stop variable
}
if (me == 0 || me == 2) {
__atomic_store_n(&atomic, sink, __ATOMIC_RELEASE);
}
if (me == 0 || me == 3) {
sink += __atomic_fetch_add(&atomic, 1, __ATOMIC_ACQ_REL);
}
if (me == 0 || me == 4) {
SecondaryThread(NULL);
}
if (me == 0 || me == 5) {
write(fds[1], fds, 1);
}
if (me == 0 || me == 6) {
char buf[2];
read(fds[0], &buf, sizeof(buf));
}
if (me == 0 || me == 7) {
pthread_t th;
pthread_create(&th, NULL, SecondaryThread, NULL);
pthread_join(th, NULL);
}
if (me == 0 || me == 8) {
long buf;
memcpy(&buf, &read_only, sizeof(buf));
sink += buf;
}
if (me == 0 || me == 9) {
#if RACE
sink += racy++;
#else
sink += racy;
#endif
}
if (me == 0 || me == 10) {
fd = open("/dev/null", O_RDONLY);
if (fd != -1) {
close(fd);
fd = -1;
}
}
// If you add more actions, update kActions in main.
}
return NULL;
}
int main() {
ANNOTATE_BENIGN_RACE(stop);
if (pipe(fds))
exit((perror("pipe"), 1));
if (fcntl(fds[0], F_SETFL, O_NONBLOCK))
exit((perror("fcntl"), 1));
if (fcntl(fds[1], F_SETFL, O_NONBLOCK))
exit((perror("fcntl"), 1));
const int kActions = 11;
#if RACE
const int kMultiplier = 1;
#else
const int kMultiplier = 4;
#endif
pthread_t t[kActions * kMultiplier];
for (int i = 0; i < kActions * kMultiplier; i++)
pthread_create(&t[i], NULL, Thread, (void *)(long)(i % kActions));
sleep(5);
stop = 1;
for (int i = 0; i < kActions * kMultiplier; i++)
pthread_join(t[i], NULL);
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK-NORACE-NOT: ThreadSanitizer:
// CHECK-NORACE: DONE
// CHECK-NORACE-NOT: ThreadSanitizer:
// CHECK-RACE: ThreadSanitizer: data race
// CHECK-RACE: DONE