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00f69bc70d
The mutex class is more restrictive in usage compared to Genode::Lock. - At initialiation time it is ever unlocked. - No thread is permitted to lock twice. Warn about it in case it happens. - Only the lock onwer is permitted to unlock the mutex. Warn about it and don't unlock the mutex in case it happens. Issue #3612
This directory contains library description files. Each '<libname>.mk' file holds the instruction for building the library '<libname>'. These makefiles are never used directly but they are called from the build system when required. When called, the build system passes the following variables: :'BASE_DIR': This is the base directory of the source tree. Source codes are specified by setting the 'SRC_CC' and 'SRC_C' variables. The source code locations must be specified via 'vpath'. A library can include other libraries by setting the 'LIBS' variable. Each '<libname>.mk' file must include the 'lib.mk' role file: ! include $(BASE_DIR)/mk/lib.mk Libraries implementing one and the same library interface may have specific implementations for different platforms. Such platform-specific '<libname>.mk' files should be placed into corresponding subdirectories. For example, the 'linux'-specific implementation of the 'server' library resides in the 'linux/' subdirectory. The build system automatically searches the right '<libname>.mk' file by evaluating the 'SPECS' configuration variable. If 'SPECS' is set to 'host linux', the build system will look into the directories './', './host', and './linux'.