mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-06-30 08:18:30 +00:00
Improve cancellations, randomness, and time
- Exhaustively document cancellation points - Rename SIGCANCEL to SIGTHR just like BSDs - Further improve POSIX thread cancellations - Ensure asynchronous cancellations work correctly - Elevate the quality of getrandom() and getentropy() - Make futexes cancel correctly on OpenBSD 6.x and 7.x - Add reboot.com and shutdown.com to examples directory - Remove underscore prefix from awesome timespec_*() APIs - Create assertions that help verify our cancellation points - Remove bad timespec APIs (cmp generalizes eq/ne/gt/gte/lt/lte)
This commit is contained in:
Justine Tunney
parent
0d7c265392
commit
3f0bcdc3ef
173 changed files with 1599 additions and 782 deletions
|
|
@ -23,73 +23,65 @@
|
|||
#include "libc/testlib/testlib.h"
|
||||
#include "third_party/nsync/time.h"
|
||||
|
||||
TEST(_timespec_gte, test) {
|
||||
EXPECT_FALSE(_timespec_gte((struct timespec){1}, (struct timespec){2}));
|
||||
EXPECT_TRUE(_timespec_gte((struct timespec){2}, (struct timespec){2}));
|
||||
EXPECT_TRUE(_timespec_gte((struct timespec){2}, (struct timespec){1}));
|
||||
EXPECT_FALSE(_timespec_gte((struct timespec){2}, (struct timespec){2, 1}));
|
||||
EXPECT_TRUE(_timespec_gte((struct timespec){2, 1}, (struct timespec){2}));
|
||||
}
|
||||
|
||||
TEST(_timespec_sub, test) {
|
||||
TEST(timespec_sub, test) {
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){-1},
|
||||
_timespec_sub((struct timespec){1}, (struct timespec){2})));
|
||||
!timespec_cmp((struct timespec){-1},
|
||||
timespec_sub((struct timespec){1}, (struct timespec){2})));
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){1},
|
||||
_timespec_sub((struct timespec){2}, (struct timespec){1})));
|
||||
EXPECT_TRUE(_timespec_eq(
|
||||
!timespec_cmp((struct timespec){1},
|
||||
timespec_sub((struct timespec){2}, (struct timespec){1})));
|
||||
EXPECT_TRUE(!timespec_cmp(
|
||||
(struct timespec){1, 1},
|
||||
_timespec_sub((struct timespec){2, 2}, (struct timespec){1, 1})));
|
||||
EXPECT_TRUE(_timespec_eq(
|
||||
timespec_sub((struct timespec){2, 2}, (struct timespec){1, 1})));
|
||||
EXPECT_TRUE(!timespec_cmp(
|
||||
(struct timespec){0, 999999999},
|
||||
_timespec_sub((struct timespec){2, 1}, (struct timespec){1, 2})));
|
||||
timespec_sub((struct timespec){2, 1}, (struct timespec){1, 2})));
|
||||
}
|
||||
|
||||
TEST(_timespec_frommillis, test) {
|
||||
TEST(timespec_frommillis, test) {
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){0, 1000000}, _timespec_frommillis(1)));
|
||||
!timespec_cmp((struct timespec){0, 1000000}, timespec_frommillis(1)));
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){0, 2000000}, _timespec_frommillis(2)));
|
||||
EXPECT_TRUE(_timespec_eq((struct timespec){1}, _timespec_frommillis(1000)));
|
||||
!timespec_cmp((struct timespec){0, 2000000}, timespec_frommillis(2)));
|
||||
EXPECT_TRUE(!timespec_cmp((struct timespec){1}, timespec_frommillis(1000)));
|
||||
}
|
||||
|
||||
TEST(_timespec_frommicros, test) {
|
||||
TEST(timespec_frommicros, test) {
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){0, 1000}, _timespec_frommicros(1)));
|
||||
!timespec_cmp((struct timespec){0, 1000}, timespec_frommicros(1)));
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){0, 2000}, _timespec_frommicros(2)));
|
||||
!timespec_cmp((struct timespec){0, 2000}, timespec_frommicros(2)));
|
||||
EXPECT_TRUE(
|
||||
_timespec_eq((struct timespec){1}, _timespec_frommicros(1000000)));
|
||||
EXPECT_TRUE(_timespec_eq((struct timespec){2, 123000},
|
||||
_timespec_frommicros(2000123)));
|
||||
!timespec_cmp((struct timespec){1}, timespec_frommicros(1000000)));
|
||||
EXPECT_TRUE(!timespec_cmp((struct timespec){2, 123000},
|
||||
timespec_frommicros(2000123)));
|
||||
}
|
||||
|
||||
TEST(_timespec_tomillis, test) {
|
||||
EXPECT_EQ(0, _timespec_tomillis((struct timespec){0, 0}));
|
||||
EXPECT_EQ(1, _timespec_tomillis((struct timespec){0, 1}));
|
||||
EXPECT_EQ(1, _timespec_tomillis((struct timespec){0, 999999}));
|
||||
EXPECT_EQ(1, _timespec_tomillis((struct timespec){0, 1000000}));
|
||||
EXPECT_EQ(1000, _timespec_tomillis((struct timespec){0, 999999999}));
|
||||
EXPECT_EQ(2123, _timespec_tomillis((struct timespec){2, 123000000}));
|
||||
EXPECT_EQ(INT64_MAX, _timespec_tomillis((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, _timespec_tomillis((struct timespec){INT64_MIN, 0}));
|
||||
EXPECT_EQ(INT64_MAX, _timespec_tomillis(
|
||||
TEST(timespec_tomillis, test) {
|
||||
EXPECT_EQ(0, timespec_tomillis((struct timespec){0, 0}));
|
||||
EXPECT_EQ(1, timespec_tomillis((struct timespec){0, 1}));
|
||||
EXPECT_EQ(1, timespec_tomillis((struct timespec){0, 999999}));
|
||||
EXPECT_EQ(1, timespec_tomillis((struct timespec){0, 1000000}));
|
||||
EXPECT_EQ(1000, timespec_tomillis((struct timespec){0, 999999999}));
|
||||
EXPECT_EQ(2123, timespec_tomillis((struct timespec){2, 123000000}));
|
||||
EXPECT_EQ(INT64_MAX, timespec_tomillis((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, timespec_tomillis((struct timespec){INT64_MIN, 0}));
|
||||
EXPECT_EQ(INT64_MAX, timespec_tomillis(
|
||||
(struct timespec){0x7fffffffffffffff, 999999999}));
|
||||
}
|
||||
|
||||
TEST(_timespec_tomicros, test) {
|
||||
EXPECT_EQ(0, _timespec_tomicros((struct timespec){0, 0}));
|
||||
EXPECT_EQ(1, _timespec_tomicros((struct timespec){0, 1}));
|
||||
EXPECT_EQ(2000123, _timespec_tomicros((struct timespec){2, 123000}));
|
||||
EXPECT_EQ(INT64_MAX, _timespec_tomicros((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, _timespec_tomicros((struct timespec){INT64_MIN, 0}));
|
||||
TEST(timespec_tomicros, test) {
|
||||
EXPECT_EQ(0, timespec_tomicros((struct timespec){0, 0}));
|
||||
EXPECT_EQ(1, timespec_tomicros((struct timespec){0, 1}));
|
||||
EXPECT_EQ(2000123, timespec_tomicros((struct timespec){2, 123000}));
|
||||
EXPECT_EQ(INT64_MAX, timespec_tomicros((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, timespec_tomicros((struct timespec){INT64_MIN, 0}));
|
||||
}
|
||||
|
||||
TEST(_timespec_tonanos, test) {
|
||||
EXPECT_EQ(2000123000, _timespec_tonanos((struct timespec){2, 123000}));
|
||||
EXPECT_EQ(INT64_MAX, _timespec_tonanos((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, _timespec_tonanos((struct timespec){INT64_MIN, 0}));
|
||||
TEST(timespec_tonanos, test) {
|
||||
EXPECT_EQ(2000123000, timespec_tonanos((struct timespec){2, 123000}));
|
||||
EXPECT_EQ(INT64_MAX, timespec_tonanos((struct timespec){INT64_MAX, 0}));
|
||||
EXPECT_EQ(INT64_MIN, timespec_tonanos((struct timespec){INT64_MIN, 0}));
|
||||
}
|
||||
|
||||
static long mod(long x, long y) {
|
||||
|
|
@ -97,11 +89,11 @@ static long mod(long x, long y) {
|
|||
return x - y * (x / y - (x % y && (x ^ y) < 0));
|
||||
}
|
||||
|
||||
TEST(_timespec_sub, math) {
|
||||
TEST(timespec_sub, math) {
|
||||
for (int i = 0; i < 1000; ++i) {
|
||||
struct timespec x = {mod(lemur64(), 10), mod(lemur64(), 10)};
|
||||
struct timespec y = {mod(lemur64(), 10), mod(lemur64(), 10)};
|
||||
struct timespec z = _timespec_add(_timespec_sub(x, y), y);
|
||||
EXPECT_TRUE(_timespec_eq(x, _timespec_add(_timespec_sub(x, y), y)));
|
||||
struct timespec z = timespec_add(timespec_sub(x, y), y);
|
||||
EXPECT_TRUE(!timespec_cmp(x, timespec_add(timespec_sub(x, y), y)));
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -57,7 +57,7 @@ BENCH(clock_gettime, bench) {
|
|||
EZBENCH2("nowl", donothing, nowl());
|
||||
EZBENCH2("rdtsc", donothing, rdtsc());
|
||||
EZBENCH2("gettimeofday", donothing, gettimeofday(&tv, 0));
|
||||
EZBENCH2("_timespec_real", donothing, _timespec_real());
|
||||
EZBENCH2("timespec_real", donothing, timespec_real());
|
||||
EZBENCH2("clock_gettime 0", donothing,
|
||||
clock_gettime(CLOCK_REALTIME_FAST, &ts));
|
||||
EZBENCH2("clock_gettime 1", donothing,
|
||||
|
|
|
|||
|
|
@ -16,6 +16,7 @@
|
|||
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
||||
│ PERFORMANCE OF THIS SOFTWARE. │
|
||||
╚─────────────────────────────────────────────────────────────────────────────*/
|
||||
#include "libc/calls/blockcancel.internal.h"
|
||||
#include "libc/calls/calls.h"
|
||||
#include "libc/calls/struct/flock.h"
|
||||
#include "libc/calls/syscall-sysv.internal.h"
|
||||
|
|
@ -50,7 +51,9 @@ bool SupportsOfdLocks(void) {
|
|||
// getrandom() was introduced in linux 3.17
|
||||
// testing for getrandom() should be a sure thing w/o creating an fd
|
||||
e = errno;
|
||||
BLOCK_CANCELLATIONS;
|
||||
r = !sys_getrandom(0, 0, 0);
|
||||
ALLOW_CANCELLATIONS;
|
||||
errno = e;
|
||||
return r;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue