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| author | Rickard Green <rickard@erlang.org> | 2012-11-29 01:24:43 +0100 |
|---|---|---|
| committer | Rickard Green <rickard@erlang.org> | 2012-12-07 00:24:27 +0100 |
| commit | 9e4895da833b7777e69efc173f5dc777aaea3201 (patch) | |
| tree | 02338dbdbf0b449b7b643437bf2cdd0cf73e4615 /erts/emulator/beam/erl_driver.h | |
| parent | 43ebafb5fb40aee326b951d18c1880e6e5fdef6b (diff) | |
| download | erlang-9e4895da833b7777e69efc173f5dc777aaea3201.tar.gz | |
Add support for busy port message queue
Diffstat (limited to 'erts/emulator/beam/erl_driver.h')
| -rw-r--r-- | erts/emulator/beam/erl_driver.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_driver.h b/erts/emulator/beam/erl_driver.h index fb9e92e44b..cbc7bd4ede 100644 --- a/erts/emulator/beam/erl_driver.h +++ b/erts/emulator/beam/erl_driver.h @@ -157,6 +157,7 @@ typedef struct { #define ERL_DRV_FLAG_USE_PORT_LOCKING (1 << 0) #define ERL_DRV_FLAG_SOFT_BUSY (1 << 1) +#define ERL_DRV_FLAG_NO_BUSY_MSGQ (1 << 2) /* * Integer types @@ -384,9 +385,18 @@ typedef struct erl_drv_entry { ErlDrvEntry* driver_init(void) #endif +#define ERL_DRV_BUSY_MSGQ_DISABLED (~((ErlDrvSizeT) 0)) +#define ERL_DRV_BUSY_MSGQ_READ_ONLY ((ErlDrvSizeT) 0) +#define ERL_DRV_BUSY_MSGQ_LIM_MAX (ERL_DRV_BUSY_MSGQ_DISABLED - 1) +#define ERL_DRV_BUSY_MSGQ_LIM_MIN ((ErlDrvSizeT) 1) + /* * These are the functions available for driver writers. */ +EXTERN void erl_drv_busy_msgq_limits(ErlDrvPort port, + ErlDrvSizeT *low, + ErlDrvSizeT *high); + EXTERN int driver_select(ErlDrvPort port, ErlDrvEvent event, int mode, int on); EXTERN int driver_event(ErlDrvPort port, ErlDrvEvent event, ErlDrvEventData event_data); |