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Improve cancellations, randomness, and time

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- 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
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GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions
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16
libc/time/localtime.c
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@ -2,6 +2,7 @@
│vi: set et ft=c ts=8 tw=8 fenc=utf-8 :vi│
╚─────────────────────────────────────────────────────────────────────────────*/
#define LOCALTIME_IMPLEMENTATION
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/calls.h"
#include "libc/intrin/bits.h"
#include "libc/intrin/nopl.internal.h"
@ -365,8 +366,8 @@ union local_storage {
format if DOEXTEND. Use *LSP for temporary storage. Return 0 on
success, an errno value on failure. */
static int
localtime_tzloadbody(char const *name, struct state *sp, bool doextend,
union local_storage *lsp)
localtime_tzloadbody_(char const *name, struct state *sp, bool doextend,
union local_storage *lsp)
{
register int i;
register int fid;
@ -742,6 +743,17 @@ localtime_tzloadbody(char const *name, struct state *sp, bool doextend,
return 0;
}
static int /* [jart] pthread cancellation safe */
localtime_tzloadbody(char const *name, struct state *sp, bool doextend,
union local_storage *lsp)
{
int rc;
BLOCK_CANCELLATIONS;
rc = localtime_tzloadbody_(name, sp, doextend, lsp);
ALLOW_CANCELLATIONS;
return rc;
}
/* Load tz data from the file named NAME into *SP. Read extended
format if DOEXTEND. Return 0 on success, an errno value on failure. */
static int