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esp-idf/components/esp_common/include/esp_compiler.h

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esp_common: update copyright headers
2022-02-20 16:03:22 -05:00
/*
* SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
components/esp_common: added esp_macros.h that aims to hold useful macros esp_common/esp_compiler: renamed esp_macros file to a more specific one esp_common/esp_compiler: removed CONTAINER_OF macro, it was a duplicate components/freertos: placed likely macros around port and critical sections component/freertos: placed likely macros on lists module components/freertos: placed unlikely macros inside of assertion points, they likely wont fail components/freertos: added likely macros on queue modules FreeRTOS queues are one of most hot code path, because to queues itself tend to be used a lot by the applications, besides that, queues are the basic primitive to form both mutexes and semaphores, The focus here is to place likely macros inside lowest level send and receive routines, since they're common from all kobjects: semaphores, queues, mutexes and FR internals (like timer queue) components/lwip: placed likely/unlikey on net-interfaces code components/fatfs: added unlikely macros on disk drivers code components/spiffs: added unlikely macros on low level fs driver components/freertos: added likely/unlikely macros on timers and ticker freertos/event_group: placed likely/unlikely macros on hot event group code paths components/sdmmc: placed likely / unlikely macros on lower level path of sdmmc components/bt: placed unlikely macros around bt HCI functions calling components/lwip: added likely/unlikely macros on OS port code section components/freertos: fix code style on tick handler
2019-10-15 17:01:05 -04:00
#ifndef __ESP_COMPILER_H
#define __ESP_COMPILER_H
/*
* The likely and unlikely macro pairs:
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
* These macros are useful to place when application
components/esp_common: added esp_macros.h that aims to hold useful macros esp_common/esp_compiler: renamed esp_macros file to a more specific one esp_common/esp_compiler: removed CONTAINER_OF macro, it was a duplicate components/freertos: placed likely macros around port and critical sections component/freertos: placed likely macros on lists module components/freertos: placed unlikely macros inside of assertion points, they likely wont fail components/freertos: added likely macros on queue modules FreeRTOS queues are one of most hot code path, because to queues itself tend to be used a lot by the applications, besides that, queues are the basic primitive to form both mutexes and semaphores, The focus here is to place likely macros inside lowest level send and receive routines, since they're common from all kobjects: semaphores, queues, mutexes and FR internals (like timer queue) components/lwip: placed likely/unlikey on net-interfaces code components/fatfs: added unlikely macros on disk drivers code components/spiffs: added unlikely macros on low level fs driver components/freertos: added likely/unlikely macros on timers and ticker freertos/event_group: placed likely/unlikely macros on hot event group code paths components/sdmmc: placed likely / unlikely macros on lower level path of sdmmc components/bt: placed unlikely macros around bt HCI functions calling components/lwip: added likely/unlikely macros on OS port code section components/freertos: fix code style on tick handler
2019-10-15 17:01:05 -04:00
* knows the majority ocurrence of a decision paths,
* placing one of these macros can hint the compiler
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
* to reorder instructions producing more optimized
components/esp_common: added esp_macros.h that aims to hold useful macros esp_common/esp_compiler: renamed esp_macros file to a more specific one esp_common/esp_compiler: removed CONTAINER_OF macro, it was a duplicate components/freertos: placed likely macros around port and critical sections component/freertos: placed likely macros on lists module components/freertos: placed unlikely macros inside of assertion points, they likely wont fail components/freertos: added likely macros on queue modules FreeRTOS queues are one of most hot code path, because to queues itself tend to be used a lot by the applications, besides that, queues are the basic primitive to form both mutexes and semaphores, The focus here is to place likely macros inside lowest level send and receive routines, since they're common from all kobjects: semaphores, queues, mutexes and FR internals (like timer queue) components/lwip: placed likely/unlikey on net-interfaces code components/fatfs: added unlikely macros on disk drivers code components/spiffs: added unlikely macros on low level fs driver components/freertos: added likely/unlikely macros on timers and ticker freertos/event_group: placed likely/unlikely macros on hot event group code paths components/sdmmc: placed likely / unlikely macros on lower level path of sdmmc components/bt: placed unlikely macros around bt HCI functions calling components/lwip: added likely/unlikely macros on OS port code section components/freertos: fix code style on tick handler
2019-10-15 17:01:05 -04:00
* code.
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
*/
esp_compiler: generate likely and unlikely macros only when performance optimization is selected as build option
2019-11-21 10:17:57 -05:00
#if (CONFIG_COMPILER_OPTIMIZATION_PERF)
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#ifndef likely
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
#define likely(x) __builtin_expect(!!(x), 1)
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#endif
#ifndef unlikely
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
#define unlikely(x) __builtin_expect(!!(x), 0)
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#endif
esp_compiler: generate likely and unlikely macros only when performance optimization is selected as build option
2019-11-21 10:17:57 -05:00
#else
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#ifndef likely
esp_compiler: generate likely and unlikely macros only when performance optimization is selected as build option
2019-11-21 10:17:57 -05:00
#define likely(x) (x)
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#endif
#ifndef unlikely
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
#define unlikely(x) (x)
esp_compiler: generate likely and unlikely macros only when performance optimization is selected as build option
2019-11-21 10:17:57 -05:00
#endif
esp_common: Don't redefine likely/unlikely if already defined As these macros aren't namespaced, they may have been defined by another header. Also reported in https://github.com/espressif/esp-idf/issues/6445
2021-02-11 23:23:36 -05:00
#endif
components/esp_common: added esp_macros.h that aims to hold useful macros esp_common/esp_compiler: renamed esp_macros file to a more specific one esp_common/esp_compiler: removed CONTAINER_OF macro, it was a duplicate components/freertos: placed likely macros around port and critical sections component/freertos: placed likely macros on lists module components/freertos: placed unlikely macros inside of assertion points, they likely wont fail components/freertos: added likely macros on queue modules FreeRTOS queues are one of most hot code path, because to queues itself tend to be used a lot by the applications, besides that, queues are the basic primitive to form both mutexes and semaphores, The focus here is to place likely macros inside lowest level send and receive routines, since they're common from all kobjects: semaphores, queues, mutexes and FR internals (like timer queue) components/lwip: placed likely/unlikey on net-interfaces code components/fatfs: added unlikely macros on disk drivers code components/spiffs: added unlikely macros on low level fs driver components/freertos: added likely/unlikely macros on timers and ticker freertos/event_group: placed likely/unlikely macros on hot event group code paths components/sdmmc: placed likely / unlikely macros on lower level path of sdmmc components/bt: placed unlikely macros around bt HCI functions calling components/lwip: added likely/unlikely macros on OS port code section components/freertos: fix code style on tick handler
2019-10-15 17:01:05 -04:00
esp-compiler: add designated init macros to make esp configuration pattern viable under C++
2020-02-06 06:28:56 -05:00
/*
* Utility macros used for designated initializers, which work differently
* in C99 and C++ standards mainly for aggregate types.
* The member separator, comma, is already part of the macro, please omit the trailing comma.
* Usage example:
* struct config_t { char* pchr; char arr[SIZE]; } config = {
* ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_EMPTY(pchr)
* ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_STR(arr, "Value")
* };
*/
#ifdef __cplusplus
#define ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_STR(member, value) { .member = value },
#define ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_EMPTY(member) .member = { },
#else
#define ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_STR(member, value) .member = value,
#define ESP_COMPILER_DESIGNATED_INIT_AGGREGATE_TYPE_EMPTY(member)
#endif
Whitespace: Automated whitespace fixes (large commit) Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
2020-11-10 02:40:01 -05:00
#endif
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