diff options
| author | Marek Olšák <[email protected]> | 2015-06-25 20:39:34 +0200 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2015-07-05 15:08:59 +0200 |
| commit | 3836857a777a248dd212ce7a1d7307d2984fda7d (patch) | |
| tree | f08d49934b2f8337e5e9c59506635d4d1472ea2a /src/gallium/auxiliary/os/os_time.h | |
| parent | 245b464d5caa21680373ae5929dccd294078cc50 (diff) | |
gallium/os: add os_wait_until_zero (v2)
This will be used by radeon and amdgpu winsyses.
Copied from the amdgpu winsys.
v2: use volatile and p_atomic_read
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Diffstat (limited to 'src/gallium/auxiliary/os/os_time.h')
| -rw-r--r-- | src/gallium/auxiliary/os/os_time.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/os/os_time.h b/src/gallium/auxiliary/os/os_time.h index 4fab03cc671..2989af10fe2 100644 --- a/src/gallium/auxiliary/os/os_time.h +++ b/src/gallium/auxiliary/os/os_time.h @@ -94,6 +94,17 @@ os_time_timeout(int64_t start, } +/** + * Wait until the variable at the given memory location is zero. + * + * \param var variable + * \param timeout timeout in ns, can be anything from 0 (no wait) to + * PIPE_TIME_INFINITE (wait forever) + * \return true if the variable is zero + */ +bool +os_wait_until_zero(volatile int *var, uint64_t timeout); + #ifdef __cplusplus } #endif |