posix: implement the POSIX_CLOCK_SELECTION Option Group
Implement the POSIX_CLOCK_SELECTION Option Group. This was mostly already done, but compiled / linked in the wrong places. E.g. pthread_condattr_getclock() and pthread_condattr_setclock() were in pthread.c and part of POSIX_THREADS_BASE. clock_nanosleep() was in clock.c and part of POSIX_TIMERS. This change builds them as part of clock_selection.c with CONFIG_POSIX_CLOCK_SELECTION. Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
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4 changed files with 77 additions and 32 deletions
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@ -2,6 +2,7 @@
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set(GEN_DIR ${ZEPHYR_BINARY_DIR}/include/generated)
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zephyr_syscall_header_ifdef(CONFIG_POSIX_CLOCK_SELECTION posix_clock.h)
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zephyr_syscall_header_ifdef(CONFIG_POSIX_TIMERS posix_clock.h)
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zephyr_syscall_header_ifdef(CONFIG_XSI_SINGLE_PROCESS posix_clock.h)
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@ -45,6 +46,13 @@ if (NOT CONFIG_TC_PROVIDES_POSIX_BARRIERS)
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zephyr_library_sources_ifdef(CONFIG_POSIX_BARRIERS barrier.c)
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endif()
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if (NOT CONFIG_TC_PROVIDES_POSIX_CLOCK_SELECTION)
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zephyr_library_sources_ifdef(CONFIG_POSIX_CLOCK_SELECTION
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clock_common.c
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clock_selection.c
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)
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endif()
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if (NOT CONFIG_TC_PROVIDES_POSIX_C_LIB_EXT)
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zephyr_library_sources_ifdef(CONFIG_POSIX_C_LIB_EXT
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fnmatch.c
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13
lib/posix/options/Kconfig.clock_selection
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13
lib/posix/options/Kconfig.clock_selection
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@ -0,0 +1,13 @@
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# Copyright (c) 2025 Tenstorrent AI ULC
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#
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# SPDX-License-Identifier: Apache-2.0
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config POSIX_CLOCK_SELECTION
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bool "POSIX Clock Selection"
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help
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Select 'y' here and Zephyr will provide an implementation of the POSIX_CLOCK_SELECTION Option
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Group, which includes the functions clock_nanosleep(), pthread_condattr_getclock(),
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pthread_condattr_setclock().
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For more information, please see
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https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_subprofiles.html
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56
lib/posix/options/clock_selection.c
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56
lib/posix/options/clock_selection.c
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@ -0,0 +1,56 @@
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/*
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* Copyright (c) 2023 Meta
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* Copyright (c) 2025 Tenstorrent AI ULC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "posix_clock.h"
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#include "posix_internal.h"
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#include <stddef.h>
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#include <time.h>
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#include <errno.h>
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#include <zephyr/posix/time.h>
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#include <zephyr/toolchain.h>
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extern int z_clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *rqtp,
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struct timespec *rmtp);
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extern int clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *rqtp,
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struct timespec *rmtp)
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{
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return z_clock_nanosleep(clock_id, flags, rqtp, rmtp);
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}
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int pthread_condattr_getclock(const pthread_condattr_t *ZRESTRICT att,
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clockid_t *ZRESTRICT clock_id)
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{
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struct posix_condattr *const attr = (struct posix_condattr *)att;
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if ((attr == NULL) || !attr->initialized) {
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return EINVAL;
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}
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*clock_id = attr->clock;
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return 0;
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}
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int pthread_condattr_setclock(pthread_condattr_t *att, clockid_t clock_id)
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{
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struct posix_condattr *const attr = (struct posix_condattr *)att;
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if (clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC) {
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return -EINVAL;
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}
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if ((attr == NULL) || !attr->initialized) {
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return EINVAL;
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}
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attr->clock = clock_id;
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return 0;
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}
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@ -276,36 +276,4 @@ int pthread_condattr_destroy(pthread_condattr_t *att)
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return 0;
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}
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int pthread_condattr_getclock(const pthread_condattr_t *ZRESTRICT att,
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clockid_t *ZRESTRICT clock_id)
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{
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struct posix_condattr *const attr = (struct posix_condattr *)att;
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if ((attr == NULL) || !attr->initialized) {
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LOG_DBG("%s %s initialized", "attribute", "not");
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return EINVAL;
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}
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*clock_id = attr->clock;
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return 0;
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}
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int pthread_condattr_setclock(pthread_condattr_t *att, clockid_t clock_id)
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{
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struct posix_condattr *const attr = (struct posix_condattr *)att;
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if (clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC) {
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return -EINVAL;
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}
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if ((attr == NULL) || !attr->initialized) {
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LOG_DBG("%s %s initialized", "attribute", "not");
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return EINVAL;
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}
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attr->clock = clock_id;
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return 0;
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}
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SYS_INIT(pthread_cond_pool_init, PRE_KERNEL_1, 0);
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