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Improve cancellations, randomness, and time

Browse source 
- 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 2022-11-05 19:49:41 -07:00
parent 0d7c265392
commit 3f0bcdc3ef
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions
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2
libc/calls/struct/rusage.h
View file

@ -26,7 +26,7 @@ struct rusage {
int getrusage(int, struct rusage *);
int wait3(int *, int, struct rusage *);
int wait4(int, int *, int, struct rusage *);
void _addrusage(struct rusage *, const struct rusage *);
void rusage_add(struct rusage *, const struct rusage *);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */

33
libc/calls/struct/timespec.h
View file

@ -3,8 +3,8 @@
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define _timespec_zero ((struct timespec){0})
#define _timespec_max ((struct timespec){0x7fffffffffffffff, 999999999})
#define timespec_zero ((struct timespec){0})
#define timespec_max ((struct timespec){0x7fffffffffffffff, 999999999})
struct timespec {
int64_t tv_sec;
@ -21,22 +21,19 @@ int utimensat(int, const char *, const struct timespec[2], int);
int timespec_get(struct timespec *, int);
int timespec_getres(struct timespec *, int);
int _timespec_cmp(struct timespec, struct timespec) pureconst;
bool _timespec_eq(struct timespec, struct timespec) pureconst;
bool _timespec_gt(struct timespec, struct timespec) pureconst;
bool _timespec_gte(struct timespec, struct timespec) pureconst;
int64_t _timespec_tomicros(struct timespec) pureconst;
int64_t _timespec_tomillis(struct timespec) pureconst;
int64_t _timespec_tonanos(struct timespec) pureconst;
struct timespec _timespec_add(struct timespec, struct timespec) pureconst;
struct timespec _timespec_fromnanos(int64_t) pureconst;
struct timespec _timespec_frommicros(int64_t) pureconst;
struct timespec _timespec_frommillis(int64_t) pureconst;
struct timespec _timespec_real(void);
struct timespec _timespec_mono(void);
struct timespec _timespec_sleep(struct timespec);
int _timespec_sleep_until(struct timespec);
struct timespec _timespec_sub(struct timespec, struct timespec) pureconst;
int timespec_cmp(struct timespec, struct timespec) pureconst;
int64_t timespec_tomicros(struct timespec) pureconst;
int64_t timespec_tomillis(struct timespec) pureconst;
int64_t timespec_tonanos(struct timespec) pureconst;
struct timespec timespec_add(struct timespec, struct timespec) pureconst;
struct timespec timespec_fromnanos(int64_t) pureconst;
struct timespec timespec_frommicros(int64_t) pureconst;
struct timespec timespec_frommillis(int64_t) pureconst;
struct timespec timespec_real(void);
struct timespec timespec_mono(void);
struct timespec timespec_sleep(struct timespec);
int timespec_sleep_until(struct timespec);
struct timespec timespec_sub(struct timespec, struct timespec) pureconst;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */

13
libc/calls/struct/timeval.h
View file

@ -16,14 +16,11 @@ int gettimeofday(struct timeval *, struct timezone *);
int lutimes(const char *, const struct timeval[2]);
int utimes(const char *, const struct timeval[2]);
int _timeval_cmp(struct timeval, struct timeval) pureconst;
bool _timeval_eq(struct timeval, struct timeval) pureconst;
bool _timeval_gt(struct timeval, struct timeval) pureconst;
bool _timeval_gte(struct timeval, struct timeval) pureconst;
struct timeval _timeval_add(struct timeval, struct timeval) pureconst;
struct timeval _timeval_sub(struct timeval, struct timeval) pureconst;
struct timeval _timespec_totimeval(struct timespec) pureconst;
struct timespec _timeval_totimespec(struct timeval) pureconst;
int timeval_cmp(struct timeval, struct timeval) pureconst;
struct timeval timeval_add(struct timeval, struct timeval) pureconst;
struct timeval timeval_sub(struct timeval, struct timeval) pureconst;
struct timeval timespec_totimeval(struct timespec) pureconst;
struct timespec timeval_totimespec(struct timeval) pureconst;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */