mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-30 17:22:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make fixes and improvements

Browse source 
- Document more compiler flags
- Expose new __print_maps() api
- Better overflow checking in mmap()
- Improve the shell example somewhat
- Fix minor runtime bugs regarding stacks
- Make kill() on fork()+execve()'d children work
- Support CLONE_CHILD_CLEARTID for proper joining
- Fix recent possible deadlock regression with --ftrace
This commit is contained in:
Justine Tunney 2022-05-19 16:57:49 -07:00
parent 6e52cba37a
commit ec2cb88058
68 changed files with 1211 additions and 431 deletions
Download patch file Download diff file Expand all files Collapse all files

32
test/libc/rand/rand64_test.c
View file

@ -38,9 +38,8 @@
#include "libc/time/time.h"
#define THREADS 8
#define ENTRIES 256
#define ENTRIES 1024
char locks[THREADS];
_Atomic(bool) ready;
volatile uint64_t A[THREADS * ENTRIES];
@ -49,7 +48,7 @@ void OnChld(int sig) {
}
dontinline void Pause(void) {
__builtin_ia32_pause();
// when ftrace is enabled
}
dontinline void Generate(int i) {
@ -62,7 +61,6 @@ int Thrasher(void *arg) {
for (i = 0; i < ENTRIES; ++i) {
Generate(id * ENTRIES + i);
}
_spunlock(locks + id);
return 0;
}
@ -93,24 +91,22 @@ TEST(rand64, testThreadSafety_doesntProduceIdenticalValues) {
sigemptyset(&ss);
sigaddset(&ss, SIGCHLD);
EXPECT_EQ(0, sigprocmask(SIG_BLOCK, &ss, &oldss));
for (i = 0; i < THREADS; ++i) {
locks[i] = 1;
}
ready = false;
memset(tid, -1, sizeof(tid));
for (i = 0; i < THREADS; ++i) {
tls[i] = calloc(1, 64);
__initialize_tls(tls[i]);
tls[i] = __initialize_tls(calloc(1, 64));
stacks[i] = mmap(0, GetStackSize(), PROT_READ | PROT_WRITE,
MAP_STACK | MAP_ANONYMOUS, -1, 0);
tid[i] =
clone(Thrasher, stacks[i], GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
(void *)(intptr_t)i, 0, tls[i], 64, 0);
ASSERT_NE(-1, tid[i]);
ASSERT_NE(-1, clone(Thrasher, stacks[i], GetStackSize(),
CLONE_THREAD | CLONE_VM | CLONE_FS | CLONE_FILES |
CLONE_SIGHAND | CLONE_SETTLS | CLONE_CHILD_CLEARTID,
(void *)(intptr_t)i, 0, tls[i], 64, tid + i));
}
ready = true;
for (i = 0; i < THREADS; ++i) {
_spinlock(locks + i);
_spinlock(tid + i);
EXPECT_SYS(0, 0, munmap(stacks[i], GetStackSize()));
free(tls[i]);
}
sigaction(SIGCHLD, &oldsa, 0);
sigprocmask(SIG_BLOCK, &oldss, 0);
@ -121,10 +117,4 @@ TEST(rand64, testThreadSafety_doesntProduceIdenticalValues) {
EXPECT_NE(A[i], A[j], "i=%d j=%d", i, j);
}
}
for (i = 0; i < THREADS; ++i) {
EXPECT_SYS(0, 0, munmap(stacks[i], GetStackSize()));
}
for (i = 0; i < THREADS; ++i) {
free(tls[i]);
}
}