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Kernel: Some futex improvements
This adds support for FUTEX_WAKE_OP, FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET, FUTEX_REQUEUE, and FUTEX_CMP_REQUEUE, as well well as global and private futex and absolute/relative timeouts against the appropriate clock. This also changes the implementation so that kernel resources are only used when a thread is blocked on a futex. Global futexes are implemented as offsets in VMObjects, so that different processes can share a futex against the same VMObject despite potentially being mapped at different virtual addresses.
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7581b64705
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23 changed files with 928 additions and 63 deletions
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@ -78,7 +78,7 @@ struct utimbuf {
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typedef int pthread_t;
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typedef int pthread_key_t;
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typedef int32_t pthread_once_t;
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typedef uint32_t pthread_once_t;
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typedef struct __pthread_mutex_t {
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uint32_t lock;
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@ -93,7 +93,7 @@ typedef struct __pthread_mutexattr_t {
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} pthread_mutexattr_t;
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typedef struct __pthread_cond_t {
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int32_t value;
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uint32_t value;
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uint32_t previous;
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int clockid; // clockid_t
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} pthread_cond_t;
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