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| author | Craig Dooley <dooleyc@google.com> | 2020-03-27 14:32:35 -0700 |
|---|---|---|
| committer | Craig Dooley <dooleyc@google.com> | 2020-03-27 14:36:08 -0700 |
| commit | 93e21478fe619593af9338246489568f9f8af6fc (patch) | |
| tree | 7344d0094399d1a134a15c37a1cd9e2f1007a471 | |
| parent | 66251399097ac3a7d861fe3e676135ec1b595446 (diff) | |
| download | aoc-ipc-93e21478fe619593af9338246489568f9f8af6fc.tar.gz | |
Add a new service header flag for 'push' rings
Change-Id: Idd912ca5e45ce153d05be7d92e30fbea9a313ab8
| -rw-r--r-- | aoc_ipc_core.c | 10 | ||||
| -rw-r--r-- | aoc_ipc_core.h | 9 | ||||
| -rw-r--r-- | aoc_ipc_core_internal.h | 3 |
3 files changed, 21 insertions, 1 deletions
diff --git a/aoc_ipc_core.c b/aoc_ipc_core.c index 4de02dc..2d3165c 100644 --- a/aoc_ipc_core.c +++ b/aoc_ipc_core.c @@ -618,3 +618,13 @@ size_t aoc_service_ring_read_offset(aoc_service *service, aoc_direction dir) return s->regions[dir].rx % s->regions[dir].size; } + +bool aoc_ring_is_push(aoc_service *service) { + struct aoc_ipc_service_header *s = + (struct aoc_ipc_service_header *)service; + + if (!service || !aoc_service_is_ring(service)) + return false; + + return (s->flags & AOC_SERVICE_FLAG_RING_PUSH) != 0; +} diff --git a/aoc_ipc_core.h b/aoc_ipc_core.h index 9c80a7f..fffb910 100644 --- a/aoc_ipc_core.h +++ b/aoc_ipc_core.h @@ -191,6 +191,15 @@ size_t aoc_ring_bytes_written(aoc_service *service, aoc_direction dir); */ bool aoc_ring_did_overflow(aoc_service *service, aoc_direction dir); +/** + * Tells if notifications should be sent after writing data into the ring + * + * \param[in] service pointer to a service + * + * \return true if the receiver expects a notification after writes + */ +bool aoc_ring_is_push(aoc_service *service); + #ifdef __cplusplus } #endif diff --git a/aoc_ipc_core_internal.h b/aoc_ipc_core_internal.h index 2f8732b..babf6e6 100644 --- a/aoc_ipc_core_internal.h +++ b/aoc_ipc_core_internal.h @@ -45,7 +45,8 @@ extern "C" { #define AOC_VERSION_LENGTH 48 #define AOC_SERVICE_FLAG_SYSTEM_MASK 0xffff0000 -#define AOC_SERVICE_FLAG_RING 0x00010000 +#define AOC_SERVICE_FLAG_RING 0x00010000 +#define AOC_SERVICE_FLAG_RING_PUSH 0x00020000 #define AOC_MAGIC 0xA0C00A0C struct aoc_control_block { |