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https://github.com/espressif/esp-idf.git
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445db75612
The Linux target's sys/lock.h provided no-op inline stubs, which was safe only under the assumption of single-threaded execution. With the new FreeRTOS Linux simulator using soft preemption, an outgoing task can still run concurrently with the incoming task until it reaches a yield point, making no-op locks unsafe. Replace the no-op implementation with real pthread mutexes: - Change _lock_t from `typedef int` to `typedef void *` (pointer to a heap-allocated pthread_mutex_t). - Implement all _lock_* functions in a new lock.c, supporting both normal and recursive mutexes. - Zero-initialized locks are lazily created on first acquire using double-checked locking, preserving newlib/esp_libc semantics. - Add lock.c unconditionally to the linux component sources and link pthread.
27 lines
785 B
CMake
27 lines
785 B
CMake
idf_build_get_property(target IDF_TARGET)
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if(NOT "${target}" STREQUAL "linux")
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return()
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endif()
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set(srcs "lock.c")
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set(includes "include")
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
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list(APPEND srcs getrandom.c assert_func.c)
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else()
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list(APPEND srcs fls.c)
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list(APPEND includes "linux_include")
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endif()
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idf_component_register(INCLUDE_DIRS ${includes}
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REQUIRED_IDF_TARGETS linux
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SRCS ${srcs})
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target_link_libraries(${COMPONENT_LIB} PRIVATE pthread)
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find_library(LIB_BSD bsd)
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if(LIB_BSD)
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target_link_libraries(${COMPONENT_LIB} PRIVATE ${LIB_BSD})
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elseif(NOT CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
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message(WARNING "Missing LIBBSD library. Install libbsd-dev package and/or check linker directories.")
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endif()
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