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Make some fixups to POSIX threads

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Justine Tunney 2022-09-07 21:13:50 -07:00
parent de511bc71a
commit 6c323383e5
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GPG key ID: BE714B4575D6E328
12 changed files with 168 additions and 69 deletions
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46
libc/thread/posixthread.internal.h
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@ -10,10 +10,46 @@ COSMOPOLITAN_C_START_
* @fileoverview Cosmopolitan POSIX Thread Internals
*/
// LEGAL TRANSITIONS ┌──> TERMINATED
// pthread_create ─┬─> JOINABLE ─┴┬─> DETACHED ──> ZOMBIE
// └──────────────┘
enum PosixThreadStatus {
// this is a running thread that needs pthread_join()
//
// the following transitions are possible:
//
// - kPosixThreadJoinable -> kPosixThreadTerminated if start_routine()
// returns, or is longjmp'd out of by pthread_exit(), and the thread
// is waiting to be joined.
//
// - kPosixThreadJoinable -> kPosixThreadDetached if pthread_detach()
// is called on this thread.
kPosixThreadJoinable,
// this is a managed thread that'll be cleaned up by the library.
//
// the following transitions are possible:
//
// - kPosixThreadDetached -> kPosixThreadZombie if start_routine()
// returns, or is longjmp'd out of by pthread_exit(), and the thread
// is waiting to be joined.
kPosixThreadDetached,
// this is a joinable thread that terminated.
//
// the following transitions are possible:
//
// - kPosixThreadTerminated -> _pthread_free() will happen when
// pthread_join() is called by the user.
kPosixThreadTerminated,
// this is a detached thread that terminated.
//
// the following transitions are possible:
//
// - kPosixThreadZombie -> _pthread_free() will happen whenever
// convenient, e.g. pthread_create() entry or atexit handler.
kPosixThreadZombie,
};
@ -28,11 +64,11 @@ struct PosixThread {
pthread_attr_t attr;
};
void pthread_free(struct PosixThread *) hidden;
void pthread_wait(struct PosixThread *) hidden;
void pthread_zombies_add(struct PosixThread *) hidden;
void pthread_zombies_decimate(void) hidden;
void pthread_zombies_harvest(void) hidden;
void _pthread_free(struct PosixThread *) hidden;
void _pthread_wait(struct PosixThread *) hidden;
void _pthread_zombies_add(struct PosixThread *) hidden;
void _pthread_zombies_decimate(void) hidden;
void _pthread_zombies_harvest(void) hidden;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */