From 1ce20656602f57ccb7baa6b8420b9b9194ee7d45 Mon Sep 17 00:00:00 2001 From: Meco Man <920369182@qq.com> Date: Thu, 25 Feb 2021 09:14:19 +0800 Subject: [PATCH] [libc][armlibc] add multithreaded protection --- components/libc/compilers/armlibc/syscalls.c | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c index d17460b41..8addb3e16 100644 --- a/components/libc/compilers/armlibc/syscalls.c +++ b/components/libc/compilers/armlibc/syscalls.c @@ -13,6 +13,7 @@ * RT_USING_DFS is not defined * 2020-02-13 Meco Man re-implement exit() and abort() * 2020-02-14 Meco Man implement _sys_tmpnam() + * 2020-02-25 Meco Man add multithreaded protection */ #include @@ -41,6 +42,36 @@ const char __stdin_name[] = "STDIN"; const char __stdout_name[] = "STDOUT"; const char __stderr_name[] = "STDERR"; +#ifdef RT_USING_HEAP +int _mutex_initialize(rt_mutex_t *m) +{ + *m = rt_mutex_create("_mutex_", RT_IPC_FLAG_PRIO); + if(*m == RT_NULL) + { + return 0; + } + else + { + return 1; + } +} + +void _mutex_acquire(rt_mutex_t *m) +{ + rt_mutex_take(*m, RT_WAITING_FOREVER); +} + +void _mutex_release(rt_mutex_t *m) +{ + rt_mutex_release(*m); +} + +void _mutex_free(rt_mutex_t *m) +{ + rt_mutex_delete(*m); +} +#endif + /** * required by fopen() and freopen(). * -- GitLab