Tor
0.4.7.0-alpha-dev
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Implement the tor_mutex API using pthread_mutex_t. More...
Go to the source code of this file.
Functions | |
void | tor_locking_init (void) |
void | tor_mutex_init (tor_mutex_t *mutex) |
void | tor_mutex_init_nonrecursive (tor_mutex_t *mutex) |
void | tor_mutex_acquire (tor_mutex_t *m) |
void | tor_mutex_release (tor_mutex_t *m) |
void | tor_mutex_uninit (tor_mutex_t *m) |
Variables | |
static pthread_mutexattr_t | attr_recursive |
static int | attr_initialized = 0 |
Implement the tor_mutex API using pthread_mutex_t.
Definition in file compat_mutex_pthreads.c.
void tor_locking_init | ( | void | ) |
Initialize the locking module, if it is not already initialized.
Definition at line 29 of file compat_mutex_pthreads.c.
Referenced by tor_mutex_init_nonrecursive().
void tor_mutex_acquire | ( | tor_mutex_t * | m | ) |
Wait until m is free, then acquire it.
Definition at line 71 of file compat_mutex_pthreads.c.
void tor_mutex_init | ( | tor_mutex_t * | mutex | ) |
Initialize mutex so it can be locked. Every mutex must be set up with tor_mutex_init() or tor_mutex_new(); not both.
Definition at line 41 of file compat_mutex_pthreads.c.
void tor_mutex_init_nonrecursive | ( | tor_mutex_t * | mutex | ) |
As tor_mutex_init, but initialize a mutex suitable that may be non-recursive, if the OS supports that.
Definition at line 56 of file compat_mutex_pthreads.c.
void tor_mutex_release | ( | tor_mutex_t * | m | ) |
Release the lock m so another thread can have it.
Definition at line 84 of file compat_mutex_pthreads.c.
void tor_mutex_uninit | ( | tor_mutex_t * | m | ) |
Clean up the mutex m so that it no longer uses any system resources. Does not free m. This function must only be called on mutexes from tor_mutex_init().
Destroying a locked mutex is undefined behaviour. Global mutexes may be locked when they are passed to this function, because multiple threads can still access them. So we can either:
Definition at line 107 of file compat_mutex_pthreads.c.
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True iff attr_recursive has been initialized.
Definition at line 23 of file compat_mutex_pthreads.c.
Referenced by tor_locking_init(), and tor_mutex_init_nonrecursive().
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static |
A mutex attribute that we're going to use to tell pthreads that we want "recursive" mutexes (i.e., once we can re-lock if we're already holding them.)
Definition at line 19 of file compat_mutex_pthreads.c.
Referenced by tor_locking_init().