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https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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Alfred Gedeon
alfred gedeon
parent
a5dbc2b1de
commit
718178c68a
406 changed files with 108795 additions and 106323 deletions
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@ -1,169 +1,200 @@
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/*
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Copyright (C) 2016-2017 Espressif Shanghai PTE LTD
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Copyright (C) 2015 Real Time Engineers Ltd.
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All rights reserved
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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***************************************************************************
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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***************************************************************************
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available on the following
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link: http://www.freertos.org/a00114.html
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*/
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* Copyright (C) 2016-2017 Espressif Shanghai PTE LTD
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* Copyright (C) 2015 Real Time Engineers Ltd.
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*
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* All rights reserved
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*
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* FreeRTOS is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License (version 2) as published by the
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* Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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*
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***************************************************************************
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* >>! NOTE: The modification to the GPL is included to allow you to !<<
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* >>! distribute a combined work that includes FreeRTOS without being !<<
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* >>! obliged to provide the source code for proprietary components !<<
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* >>! outside of the FreeRTOS kernel. !<<
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***************************************************************************
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*
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* FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. Full license text is available on the following
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* link: http://www.freertos.org/a00114.html
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*/
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/*
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Warning: funky preprocessor hackery ahead. Including these headers will generate two
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functions, which names are defined by the preprocessor macros
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PORTMUX_AQUIRE_MUX_FN_NAME and PORTMUX_RELEASE_MUX_FN_NAME. In order to do the compare
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and exchange function, they will use whatever PORTMUX_COMPARE_SET_FN_NAME resolves to.
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In some scenarios, this header is included *twice* in portmux_impl.h: one time
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for the 'normal' mux code which uses a compare&exchange routine, another time
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to generate code for a second set of these routines that use a second mux
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(in internal ram) to fake a compare&exchange on a variable in external memory.
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*/
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* Warning: funky preprocessor hackery ahead. Including these headers will generate two
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* functions, which names are defined by the preprocessor macros
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* PORTMUX_AQUIRE_MUX_FN_NAME and PORTMUX_RELEASE_MUX_FN_NAME. In order to do the compare
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* and exchange function, they will use whatever PORTMUX_COMPARE_SET_FN_NAME resolves to.
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*
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* In some scenarios, this header is included *twice* in portmux_impl.h: one time
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* for the 'normal' mux code which uses a compare&exchange routine, another time
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* to generate code for a second set of these routines that use a second mux
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* (in internal ram) to fake a compare&exchange on a variable in external memory.
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*/
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static inline bool __attribute__((always_inline))
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static inline bool __attribute__( ( always_inline ) )
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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PORTMUX_AQUIRE_MUX_FN_NAME(portMUX_TYPE *mux, int timeout_cycles, const char *fnName, int line) {
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PORTMUX_AQUIRE_MUX_FN_NAME( portMUX_TYPE * mux,
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int timeout_cycles,
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const char * fnName,
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int line )
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{
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#else
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PORTMUX_AQUIRE_MUX_FN_NAME(portMUX_TYPE *mux, int timeout_cycles) {
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#endif
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PORTMUX_AQUIRE_MUX_FN_NAME( portMUX_TYPE * mux, int timeout_cycles )
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{
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#endif
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#if !CONFIG_FREERTOS_UNICORE
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uint32_t res;
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portBASE_TYPE coreID, otherCoreID;
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uint32_t ccount_start;
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bool set_timeout = timeout_cycles > portMUX_NO_TIMEOUT;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if (!set_timeout) {
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timeout_cycles = 10000; // Always set a timeout in debug mode
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set_timeout = true;
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}
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#endif
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if (set_timeout) { // Timeout
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RSR(CCOUNT, ccount_start);
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}
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#if !CONFIG_FREERTOS_UNICORE
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uint32_t res;
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portBASE_TYPE coreID, otherCoreID;
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uint32_t ccount_start;
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bool set_timeout = timeout_cycles > portMUX_NO_TIMEOUT;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if( !set_timeout )
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{
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timeout_cycles = 10000; /* Always set a timeout in debug mode */
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set_timeout = true;
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}
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#endif
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if( set_timeout ) /* Timeout */
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{
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RSR( CCOUNT, ccount_start );
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}
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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uint32_t owner = mux->owner;
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if( ( owner != portMUX_FREE_VAL ) && ( owner != CORE_ID_PRO ) && ( owner != CORE_ID_APP ) )
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{
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ets_printf( "ERROR: vPortCPUAcquireMutex: mux %p is uninitialized (0x%X)! Called from %s line %d.\n", mux, owner, fnName, line );
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mux->owner = portMUX_FREE_VAL;
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}
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#endif
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/* Spin until we own the core */
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RSR( PRID, coreID );
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/* Note: coreID is the full 32 bit core ID (CORE_ID_PRO/CORE_ID_APP),
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* not the 0/1 value returned by xPortGetCoreID()
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*/
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otherCoreID = CORE_ID_XOR_SWAP ^ coreID;
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do
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{
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/* mux->owner should be one of portMUX_FREE_VAL, CORE_ID_PRO,
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* CORE_ID_APP:
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*
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* - If portMUX_FREE_VAL, we want to atomically set to 'coreID'.
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* - If "our" coreID, we can drop through immediately.
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* - If "otherCoreID", we spin here.
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*/
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res = coreID;
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PORTMUX_COMPARE_SET_FN_NAME( &mux->owner, portMUX_FREE_VAL, &res );
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if( res != otherCoreID )
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{
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break; /* mux->owner is "our" coreID */
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}
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if( set_timeout )
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{
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uint32_t ccount_now;
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RSR( CCOUNT, ccount_now );
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if( ccount_now - ccount_start > ( unsigned ) timeout_cycles )
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{
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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ets_printf( "Timeout on mux! last non-recursive lock %s line %d, curr %s line %d\n", mux->lastLockedFn, mux->lastLockedLine, fnName, line );
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ets_printf( "Owner 0x%x count %d\n", mux->owner, mux->count );
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#endif
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return false;
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}
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}
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} while( 1 );
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assert( res == coreID || res == portMUX_FREE_VAL ); /* any other value implies memory corruption or uninitialized mux */
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assert( ( res == portMUX_FREE_VAL ) == ( mux->count == 0 ) ); /* we're first to lock iff count is zero */
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assert( mux->count < 0xFF ); /* Bad count value implies memory corruption */
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/* now we own it, we can increment the refcount */
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mux->count++;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if( res == portMUX_FREE_VAL ) /*initial lock */
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{
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mux->lastLockedFn = fnName;
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mux->lastLockedLine = line;
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}
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else
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{
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ets_printf( "Recursive lock: count=%d last non-recursive lock %s line %d, curr %s line %d\n", mux->count - 1,
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mux->lastLockedFn, mux->lastLockedLine, fnName, line );
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}
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#endif /* CONFIG_FREERTOS_PORTMUX_DEBUG */
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#endif /* CONFIG_FREERTOS_UNICORE */
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return true;
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}
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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uint32_t owner = mux->owner;
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if (owner != portMUX_FREE_VAL && owner != CORE_ID_PRO && owner != CORE_ID_APP) {
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ets_printf("ERROR: vPortCPUAcquireMutex: mux %p is uninitialized (0x%X)! Called from %s line %d.\n", mux, owner, fnName, line);
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mux->owner=portMUX_FREE_VAL;
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}
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#endif
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/* Spin until we own the core */
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RSR(PRID, coreID);
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/* Note: coreID is the full 32 bit core ID (CORE_ID_PRO/CORE_ID_APP),
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not the 0/1 value returned by xPortGetCoreID()
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*/
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otherCoreID = CORE_ID_XOR_SWAP ^ coreID;
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do {
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/* mux->owner should be one of portMUX_FREE_VAL, CORE_ID_PRO,
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CORE_ID_APP:
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- If portMUX_FREE_VAL, we want to atomically set to 'coreID'.
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- If "our" coreID, we can drop through immediately.
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- If "otherCoreID", we spin here.
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*/
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res = coreID;
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PORTMUX_COMPARE_SET_FN_NAME(&mux->owner, portMUX_FREE_VAL, &res);
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if (res != otherCoreID) {
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break; // mux->owner is "our" coreID
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}
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if (set_timeout) {
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uint32_t ccount_now;
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RSR(CCOUNT, ccount_now);
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if (ccount_now - ccount_start > (unsigned)timeout_cycles) {
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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ets_printf("Timeout on mux! last non-recursive lock %s line %d, curr %s line %d\n", mux->lastLockedFn, mux->lastLockedLine, fnName, line);
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ets_printf("Owner 0x%x count %d\n", mux->owner, mux->count);
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#endif
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return false;
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}
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}
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} while (1);
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assert(res == coreID || res == portMUX_FREE_VAL); /* any other value implies memory corruption or uninitialized mux */
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assert((res == portMUX_FREE_VAL) == (mux->count == 0)); /* we're first to lock iff count is zero */
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assert(mux->count < 0xFF); /* Bad count value implies memory corruption */
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/* now we own it, we can increment the refcount */
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mux->count++;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if (res==portMUX_FREE_VAL) { //initial lock
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mux->lastLockedFn=fnName;
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mux->lastLockedLine=line;
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} else {
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ets_printf("Recursive lock: count=%d last non-recursive lock %s line %d, curr %s line %d\n", mux->count-1,
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mux->lastLockedFn, mux->lastLockedLine, fnName, line);
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}
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#endif /* CONFIG_FREERTOS_PORTMUX_DEBUG */
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#endif /* CONFIG_FREERTOS_UNICORE */
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return true;
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}
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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static inline void PORTMUX_RELEASE_MUX_FN_NAME(portMUX_TYPE *mux, const char *fnName, int line) {
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static inline void PORTMUX_RELEASE_MUX_FN_NAME( portMUX_TYPE * mux,
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const char * fnName,
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int line )
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{
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#else
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static inline void PORTMUX_RELEASE_MUX_FN_NAME(portMUX_TYPE *mux) {
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#endif
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static inline void PORTMUX_RELEASE_MUX_FN_NAME( portMUX_TYPE * mux )
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{
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#endif
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#if !CONFIG_FREERTOS_UNICORE
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portBASE_TYPE coreID;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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const char *lastLockedFn=mux->lastLockedFn;
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int lastLockedLine=mux->lastLockedLine;
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mux->lastLockedFn=fnName;
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mux->lastLockedLine=line;
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uint32_t owner = mux->owner;
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if (owner != portMUX_FREE_VAL && owner != CORE_ID_PRO && owner != CORE_ID_APP) {
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ets_printf("ERROR: vPortCPUReleaseMutex: mux %p is invalid (0x%x)!\n", mux, mux->owner);
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}
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#endif
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#if !CONFIG_FREERTOS_UNICORE
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portBASE_TYPE coreID;
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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const char * lastLockedFn = mux->lastLockedFn;
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int lastLockedLine = mux->lastLockedLine;
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mux->lastLockedFn = fnName;
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mux->lastLockedLine = line;
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uint32_t owner = mux->owner;
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#if CONFIG_FREERTOS_PORTMUX_DEBUG || !defined(NDEBUG)
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RSR(PRID, coreID);
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#endif
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if( ( owner != portMUX_FREE_VAL ) && ( owner != CORE_ID_PRO ) && ( owner != CORE_ID_APP ) )
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{
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ets_printf( "ERROR: vPortCPUReleaseMutex: mux %p is invalid (0x%x)!\n", mux, mux->owner );
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}
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#endif /* ifdef CONFIG_FREERTOS_PORTMUX_DEBUG */
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if (coreID != mux->owner) {
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ets_printf("ERROR: vPortCPUReleaseMutex: mux %p was already unlocked!\n", mux);
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ets_printf("Last non-recursive unlock %s line %d, curr unlock %s line %d\n", lastLockedFn, lastLockedLine, fnName, line);
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}
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#endif
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#if CONFIG_FREERTOS_PORTMUX_DEBUG || !defined( NDEBUG )
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RSR( PRID, coreID );
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#endif
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assert(coreID == mux->owner); // This is a mutex we didn't lock, or it's corrupt
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
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if( coreID != mux->owner )
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{
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ets_printf( "ERROR: vPortCPUReleaseMutex: mux %p was already unlocked!\n", mux );
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ets_printf( "Last non-recursive unlock %s line %d, curr unlock %s line %d\n", lastLockedFn, lastLockedLine, fnName, line );
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}
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#endif
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mux->count--;
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if(mux->count == 0) {
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mux->owner = portMUX_FREE_VAL;
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} else {
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assert(mux->count < 0x100); // Indicates memory corruption
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG_RECURSIVE
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ets_printf("Recursive unlock: count=%d last locked %s line %d, curr %s line %d\n", mux->count, lastLockedFn, lastLockedLine, fnName, line);
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#endif
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}
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#endif //!CONFIG_FREERTOS_UNICORE
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}
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assert( coreID == mux->owner ); /* This is a mutex we didn't lock, or it's corrupt */
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mux->count--;
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if( mux->count == 0 )
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{
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mux->owner = portMUX_FREE_VAL;
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}
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else
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{
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assert( mux->count < 0x100 ); /* Indicates memory corruption */
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#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG_RECURSIVE
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ets_printf( "Recursive unlock: count=%d last locked %s line %d, curr %s line %d\n", mux->count, lastLockedFn, lastLockedLine, fnName, line );
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#endif
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}
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#endif //!CONFIG_FREERTOS_UNICORE
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}
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