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| author | Rickard Green <[email protected]> | 2013-02-18 00:29:51 +0100 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2013-02-21 01:08:09 +0100 |
| commit | df40b0b99810121d9630730d6f58cf96bfea70e8 (patch) | |
| tree | 33b715adbfe2522b45a98c92e939d9b1b879ea5f /erts/emulator/beam/erl_thr_queue.h | |
| parent | 4f6a7255afbd5b296139e073d66564976d80cc06 (diff) | |
| download | otp-df40b0b99810121d9630730d6f58cf96bfea70e8.tar.gz otp-df40b0b99810121d9630730d6f58cf96bfea70e8.tar.bz2 otp-df40b0b99810121d9630730d6f58cf96bfea70e8.zip | |
Use dirty read instead of union which can be unsafe on some platforms
Diffstat (limited to 'erts/emulator/beam/erl_thr_queue.h')
| -rw-r--r-- | erts/emulator/beam/erl_thr_queue.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/erts/emulator/beam/erl_thr_queue.h b/erts/emulator/beam/erl_thr_queue.h index edcf2c3823..ae8c7fb19a 100644 --- a/erts/emulator/beam/erl_thr_queue.h +++ b/erts/emulator/beam/erl_thr_queue.h @@ -76,13 +76,12 @@ typedef struct { typedef struct ErtsThrQElement_t_ ErtsThrQElement_t; typedef struct ErtsThrQElement_t ErtsThrQPrepEnQ_t; -typedef union { - erts_atomic_t atmc; - ErtsThrQElement_t *ptr; -} ErtsThrQPtr_t; - struct ErtsThrQElement_t_ { - ErtsThrQPtr_t next; +#ifdef USE_THREADS + erts_atomic_t next; +#else + ErtsThrQElement_t *next; +#endif union { erts_atomic_t atmc; void *ptr; @@ -130,7 +129,7 @@ struct ErtsThrQ_t_ { * thread dequeuing. */ struct { - ErtsThrQPtr_t head; + erts_atomic_t head; ErtsThrQLive_t live; ErtsThrQElement_t *first; ErtsThrQElement_t *unref_end; |