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Merge pull request #9600 from kjbracey-arm/atomic_exchange_64 

Atomic extensions: 64-bit, bool, exchange
pull/9645/head
Cruz Monrreal 2019-02-12 20:28:00 -06:00 committed by GitHub
parent 270ff3b6de 9e7c65925d
commit 709e6ff795
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 552 additions and 170 deletions
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51
UNITTESTS/stubs/mbed_critical_stub.c
View File

@ -71,6 +71,22 @@ bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentV
}
uint8_t core_util_atomic_exchange_u8(volatile uint8_t *ptr, uint8_t desiredValue)
{
return 0;
}
uint16_t core_util_atomic_exchange_u16(volatile uint16_t *ptr, uint16_t desiredValue)
{
return 0;
}
uint32_t core_util_atomic_exchange_u32(volatile uint32_t *ptr, uint32_t desiredValue)
{
return 0;
}
uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
{
return 0;
@ -103,11 +119,46 @@ uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
}
uint64_t core_util_atomic_load_u64(const volatile uint64_t *valuePtr)
{
return 0;
}
void core_util_atomic_store_u64(volatile uint64_t *valuePtr, uint64_t desiredValue)
{
}
uint64_t core_util_atomic_exchange_u64(volatile uint64_t *valuePtr, uint64_t desiredValue)
{
return 0;
}
bool core_util_atomic_cas_u64(volatile uint64_t *ptr, uint64_t *expectedCurrentValue, uint64_t desiredValue)
{
return false;
}
uint64_t core_util_atomic_incr_u64(volatile uint64_t *valuePtr, uint64_t delta)
{
return 0;
}
uint64_t core_util_atomic_decr_u64(volatile uint64_t *valuePtr, uint64_t delta)
{
return 0;
}
bool core_util_atomic_cas_ptr(void *volatile *ptr, void **expectedCurrentValue, void *desiredValue)
{
return false;
}
void *core_util_atomic_exchange_ptr(void *volatile *valuePtr, void *desiredValue)
{
return NULL;
}
void *core_util_atomic_incr_ptr(void *volatile *valuePtr, ptrdiff_t delta)
{
return NULL;

142
platform/mbed_critical.c
View File

@ -100,6 +100,9 @@ void core_util_critical_section_exit(void)
}
}
/* Inline bool implementations in the header use uint8_t versions to manipulate the bool */
MBED_STATIC_ASSERT(sizeof(bool) == sizeof(uint8_t), "Surely bool is a byte");
#if MBED_EXCLUSIVE_ACCESS
/* Supress __ldrex and __strex deprecated warnings - "#3731-D: intrinsic is deprecated" */
@ -109,8 +112,8 @@ void core_util_critical_section_exit(void)
bool core_util_atomic_flag_test_and_set(volatile core_util_atomic_flag *flagPtr)
{
uint8_t currentValue;
MBED_BARRIER();
uint8_t currentValue;
do {
currentValue = __LDREXB(&flagPtr->_flag);
} while (__STREXB(true, &flagPtr->_flag));
@ -164,6 +167,39 @@ bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentV
return true;
}
uint8_t core_util_atomic_exchange_u8(volatile uint8_t *valuePtr, uint8_t desiredValue)
{
MBED_BARRIER();
uint8_t currentValue;
do {
currentValue = __LDREXB(valuePtr);
} while (__STREXB(desiredValue, valuePtr));
MBED_BARRIER();
return currentValue;
}
uint16_t core_util_atomic_exchange_u16(volatile uint16_t *valuePtr, uint16_t desiredValue)
{
MBED_BARRIER();
uint16_t currentValue;
do {
currentValue = __LDREXH(valuePtr);
} while (__STREXH(desiredValue, valuePtr));
MBED_BARRIER();
return currentValue;
}
uint32_t core_util_atomic_exchange_u32(volatile uint32_t *valuePtr, uint32_t desiredValue)
{
MBED_BARRIER();
uint32_t currentValue;
do {
currentValue = __LDREXW(valuePtr);
} while (__STREXW(desiredValue, valuePtr));
MBED_BARRIER();
return currentValue;
}
uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
{
MBED_BARRIER();
@ -188,8 +224,8 @@ uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
{
uint32_t newValue;
MBED_BARRIER();
uint32_t newValue;
do {
newValue = __LDREXW(valuePtr) + delta;
} while (__STREXW(newValue, valuePtr));
@ -200,8 +236,8 @@ uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
{
uint8_t newValue;
MBED_BARRIER();
uint8_t newValue;
do {
newValue = __LDREXB(valuePtr) - delta;
} while (__STREXB(newValue, valuePtr));
@ -211,8 +247,8 @@ uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
{
uint16_t newValue;
MBED_BARRIER();
uint16_t newValue;
do {
newValue = __LDREXH(valuePtr) - delta;
} while (__STREXH(newValue, valuePtr));
@ -222,8 +258,8 @@ uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
{
uint32_t newValue;
MBED_BARRIER();
uint32_t newValue;
do {
newValue = __LDREXW(valuePtr) - delta;
} while (__STREXW(newValue, valuePtr));
@ -295,6 +331,34 @@ bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentV
}
uint8_t core_util_atomic_exchange_u8(volatile uint8_t *ptr, uint8_t desiredValue)
{
core_util_critical_section_enter();
uint8_t currentValue = *ptr;
*ptr = desiredValue;
core_util_critical_section_exit();
return currentValue;
}
uint16_t core_util_atomic_exchange_u16(volatile uint16_t *ptr, uint16_t desiredValue)
{
core_util_critical_section_enter();
uint16_t currentValue = *ptr;
*ptr = desiredValue;
core_util_critical_section_exit();
return currentValue;
}
uint32_t core_util_atomic_exchange_u32(volatile uint32_t *ptr, uint32_t desiredValue)
{
core_util_critical_section_enter();
uint32_t currentValue = *ptr;
*ptr = desiredValue;
core_util_critical_section_exit();
return currentValue;
}
uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
{
uint8_t newValue;
@ -358,6 +422,69 @@ uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
#endif
/* No architecture we support has LDREXD/STREXD, so must always disable IRQs for 64-bit operations */
uint64_t core_util_atomic_load_u64(const volatile uint64_t *valuePtr)
{
core_util_critical_section_enter();
uint64_t currentValue = *valuePtr;
core_util_critical_section_exit();
return currentValue;
}
void core_util_atomic_store_u64(volatile uint64_t *valuePtr, uint64_t desiredValue)
{
core_util_critical_section_enter();
*valuePtr = desiredValue;
core_util_critical_section_exit();
}
uint64_t core_util_atomic_exchange_u64(volatile uint64_t *valuePtr, uint64_t desiredValue)
{
core_util_critical_section_enter();
uint64_t currentValue = *valuePtr;
*valuePtr = desiredValue;
core_util_critical_section_exit();
return currentValue;
}
bool core_util_atomic_cas_u64(volatile uint64_t *ptr, uint64_t *expectedCurrentValue, uint64_t desiredValue)
{
bool success;
uint64_t currentValue;
core_util_critical_section_enter();
currentValue = *ptr;
if (currentValue == *expectedCurrentValue) {
*ptr = desiredValue;
success = true;
} else {
*expectedCurrentValue = currentValue;
success = false;
}
core_util_critical_section_exit();
return success;
}
uint64_t core_util_atomic_incr_u64(volatile uint64_t *valuePtr, uint64_t delta)
{
uint64_t newValue;
core_util_critical_section_enter();
newValue = *valuePtr + delta;
*valuePtr = newValue;
core_util_critical_section_exit();
return newValue;
}
uint64_t core_util_atomic_decr_u64(volatile uint64_t *valuePtr, uint64_t delta)
{
uint64_t newValue;
core_util_critical_section_enter();
newValue = *valuePtr - delta;
*valuePtr = newValue;
core_util_critical_section_exit();
return newValue;
}
MBED_STATIC_ASSERT(sizeof(void *) == sizeof(uint32_t), "Alas, pointers must be 32-bit");
bool core_util_atomic_cas_ptr(void *volatile *ptr, void **expectedCurrentValue, void *desiredValue)
{
@ -367,6 +494,11 @@ bool core_util_atomic_cas_ptr(void *volatile *ptr, void **expectedCurrentValue,
(uint32_t)desiredValue);
}
void *core_util_atomic_exchange_ptr(void *volatile *valuePtr, void *desiredValue)
{
return (void *)core_util_atomic_exchange_u32((volatile uint32_t *)valuePtr, (uint32_t)desiredValue);
}
void *core_util_atomic_incr_ptr(void *volatile *valuePtr, ptrdiff_t delta)
{
return (void *)core_util_atomic_incr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);

529
platform/mbed_critical.h
View File

@ -202,175 +202,45 @@ MBED_FORCEINLINE void core_util_atomic_flag_clear(volatile core_util_atomic_flag
*/
bool core_util_atomic_cas_u8(volatile uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue);
/**
* Atomic compare and set. It compares the contents of a memory location to a
* given value and, only if they are the same, modifies the contents of that
* memory location to a given new value. This is done as a single atomic
* operation. The atomicity guarantees that the new value is calculated based on
* up-to-date information; if the value had been updated by another thread in
* the meantime, the write would fail due to a mismatched expectedCurrentValue.
*
* Refer to https://en.wikipedia.org/wiki/Compare-and-set [which may redirect
* you to the article on compare-and swap].
*
* @param ptr The target memory location.
* @param[in,out] expectedCurrentValue A pointer to some location holding the
* expected current value of the data being set atomically.
* The computed 'desiredValue' should be a function of this current value.
* @note: This is an in-out parameter. In the
* failure case of atomic_cas (where the
* destination isn't set), the pointee of expectedCurrentValue is
* updated with the current value.
* @param[in] desiredValue The new value computed based on '*expectedCurrentValue'.
*
* @return true if the memory location was atomically
* updated with the desired value (after verifying
* that it contained the expectedCurrentValue),
* false otherwise. In the failure case,
* exepctedCurrentValue is updated with the new
* value of the target memory location.
*
* pseudocode:
* function cas(p : pointer to int, old : pointer to int, new : int) returns bool {
* if *p != *old {
* *old = *p
* return false
* }
* *p = new
* return true
* }
*
* @note: In the failure case (where the destination isn't set), the value
* pointed to by expectedCurrentValue is instead updated with the current value.
* This property helps writing concise code for the following incr:
*
* function incr(p : pointer to int, a : int) returns int {
* done = false
* value = *p // This fetch operation need not be atomic.
* while not done {
* done = atomic_cas(p, &value, value + a) // *value gets updated automatically until success
* }
* return value + a
* }
*
* @note: This corresponds to the C11 "atomic_compare_exchange_strong" - it
* always succeeds if the current value is expected, as per the pseudocode
* above; it will not spuriously fail as "atomic_compare_exchange_weak" may.
*/
/** \copydoc core_util_atomic_cas_u8 */
bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue);
/**
* Atomic compare and set. It compares the contents of a memory location to a
* given value and, only if they are the same, modifies the contents of that
* memory location to a given new value. This is done as a single atomic
* operation. The atomicity guarantees that the new value is calculated based on
* up-to-date information; if the value had been updated by another thread in
* the meantime, the write would fail due to a mismatched expectedCurrentValue.
*
* Refer to https://en.wikipedia.org/wiki/Compare-and-set [which may redirect
* you to the article on compare-and swap].
*
* @param ptr The target memory location.
* @param[in,out] expectedCurrentValue A pointer to some location holding the
* expected current value of the data being set atomically.
* The computed 'desiredValue' should be a function of this current value.
* @note: This is an in-out parameter. In the
* failure case of atomic_cas (where the
* destination isn't set), the pointee of expectedCurrentValue is
* updated with the current value.
* @param[in] desiredValue The new value computed based on '*expectedCurrentValue'.
*
* @return true if the memory location was atomically
* updated with the desired value (after verifying
* that it contained the expectedCurrentValue),
* false otherwise. In the failure case,
* exepctedCurrentValue is updated with the new
* value of the target memory location.
*
* pseudocode:
* function cas(p : pointer to int, old : pointer to int, new : int) returns bool {
* if *p != *old {
* *old = *p
* return false
* }
* *p = new
* return true
* }
*
* @note: In the failure case (where the destination isn't set), the value
* pointed to by expectedCurrentValue is instead updated with the current value.
* This property helps writing concise code for the following incr:
*
* function incr(p : pointer to int, a : int) returns int {
* done = false
* value = *p // This fetch operation need not be atomic.
* while not done {
* done = atomic_cas(p, &value, value + a) // *value gets updated automatically until success
* }
* return value + a
*
* @note: This corresponds to the C11 "atomic_compare_exchange_strong" - it
* always succeeds if the current value is expected, as per the pseudocode
* above; it will not spuriously fail as "atomic_compare_exchange_weak" may.
* }
*/
/** \copydoc core_util_atomic_cas_u8 */
bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue);
/**
* Atomic compare and set. It compares the contents of a memory location to a
* given value and, only if they are the same, modifies the contents of that
* memory location to a given new value. This is done as a single atomic
* operation. The atomicity guarantees that the new value is calculated based on
* up-to-date information; if the value had been updated by another thread in
* the meantime, the write would fail due to a mismatched expectedCurrentValue.
*
* Refer to https://en.wikipedia.org/wiki/Compare-and-set [which may redirect
* you to the article on compare-and swap].
*
* @param ptr The target memory location.
* @param[in,out] expectedCurrentValue A pointer to some location holding the
* expected current value of the data being set atomically.
* The computed 'desiredValue' should be a function of this current value.
* @note: This is an in-out parameter. In the
* failure case of atomic_cas (where the
* destination isn't set), the pointee of expectedCurrentValue is
* updated with the current value.
* @param[in] desiredValue The new value computed based on '*expectedCurrentValue'.
*
* @return true if the memory location was atomically
* updated with the desired value (after verifying
* that it contained the expectedCurrentValue),
* false otherwise. In the failure case,
* exepctedCurrentValue is updated with the new
* value of the target memory location.
*
* pseudocode:
* function cas(p : pointer to int, old : pointer to int, new : int) returns bool {
* if *p != *old {
* *old = *p
* return false
* }
* *p = new
* return true
* }
*
* @note: In the failure case (where the destination isn't set), the value
* pointed to by expectedCurrentValue is instead updated with the current value.
* This property helps writing concise code for the following incr:
*
* function incr(p : pointer to int, a : int) returns int {
* done = false
* value = *p // This fetch operation need not be atomic.
* while not done {
* done = atomic_cas(p, &value, value + a) // *value gets updated automatically until success
* }
* return value + a
* }
*
* @note: This corresponds to the C11 "atomic_compare_exchange_strong" - it
* always succeeds if the current value is expected, as per the pseudocode
* above; it will not spuriously fail as "atomic_compare_exchange_weak" may.
*/
/** \copydoc core_util_atomic_cas_u8 */
bool core_util_atomic_cas_u64(volatile uint64_t *ptr, uint64_t *expectedCurrentValue, uint64_t desiredValue);
/** \copydoc core_util_atomic_cas_u8 */
MBED_FORCEINLINE int8_t core_util_atomic_cas_s8(volatile int8_t *ptr, int8_t *expectedCurrentValue, int8_t desiredValue)
{
return (int8_t)core_util_atomic_cas_u8((volatile uint8_t *)ptr, (uint8_t *)expectedCurrentValue, (uint8_t)desiredValue);
}
/** \copydoc core_util_atomic_cas_u8 */
MBED_FORCEINLINE int16_t core_util_atomic_cas_s16(volatile int16_t *ptr, int16_t *expectedCurrentValue, int16_t desiredValue)
{
return (int16_t)core_util_atomic_cas_u16((volatile uint16_t *)ptr, (uint16_t *)expectedCurrentValue, (uint16_t)desiredValue);
}
/** \copydoc core_util_atomic_cas_u8 */
MBED_FORCEINLINE int32_t core_util_atomic_cas_s32(volatile int32_t *ptr, int32_t *expectedCurrentValue, int32_t desiredValue)
{
return (int32_t)core_util_atomic_cas_u32((volatile uint32_t *)ptr, (uint32_t *)expectedCurrentValue, (uint32_t)desiredValue);
}
/** \copydoc core_util_atomic_cas_u8 */
MBED_FORCEINLINE int64_t core_util_atomic_cas_s64(volatile int64_t *ptr, int64_t *expectedCurrentValue, int64_t desiredValue)
{
return (int64_t)core_util_atomic_cas_u64((volatile uint64_t *)ptr, (uint64_t *)expectedCurrentValue, (uint64_t)desiredValue);
}
/** \copydoc core_util_atomic_cas_u8 */
MBED_FORCEINLINE bool core_util_atomic_cas_bool(volatile bool *ptr, bool *expectedCurrentValue, bool desiredValue)
{
return (bool)core_util_atomic_cas_u8((volatile uint8_t *)ptr, (uint8_t *)expectedCurrentValue, desiredValue);
}
/** \copydoc core_util_atomic_cas_u8 */
bool core_util_atomic_cas_ptr(void *volatile *ptr, void **expectedCurrentValue, void *desiredValue);
/**
@ -409,6 +279,71 @@ MBED_FORCEINLINE uint32_t core_util_atomic_load_u32(const volatile uint32_t *val
return value;
}
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
uint64_t core_util_atomic_load_u64(const volatile uint64_t *valuePtr);
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
MBED_FORCEINLINE int8_t core_util_atomic_load_s8(const volatile int8_t *valuePtr)
{
int8_t value = *valuePtr;
MBED_BARRIER();
return value;
}
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
MBED_FORCEINLINE int16_t core_util_atomic_load_s16(const volatile int16_t *valuePtr)
{
int16_t value = *valuePtr;
MBED_BARRIER();
return value;
}
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
MBED_FORCEINLINE int32_t core_util_atomic_load_s32(const volatile int32_t *valuePtr)
{
int32_t value = *valuePtr;
MBED_BARRIER();
return value;
}
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
MBED_FORCEINLINE int64_t core_util_atomic_load_s64(const volatile int64_t *valuePtr)
{
return (int64_t)core_util_atomic_load_u64((const volatile uint64_t *)valuePtr);
}
/**
* Atomic load.
* @param valuePtr Target memory location.
* @return The loaded value.
*/
MBED_FORCEINLINE bool core_util_atomic_load_bool(const volatile bool *valuePtr)
{
bool value = *valuePtr;
MBED_BARRIER();
return value;
}
/**
* Atomic load.
* @param valuePtr Target memory location.
@ -457,6 +392,71 @@ MBED_FORCEINLINE void core_util_atomic_store_u32(volatile uint32_t *valuePtr, ui
MBED_BARRIER();
}
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
void core_util_atomic_store_u64(volatile uint64_t *valuePtr, uint64_t desiredValue);
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
MBED_FORCEINLINE void core_util_atomic_store_s8(volatile int8_t *valuePtr, int8_t desiredValue)
{
MBED_BARRIER();
*valuePtr = desiredValue;
MBED_BARRIER();
}
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
MBED_FORCEINLINE void core_util_atomic_store_s16(volatile int16_t *valuePtr, int16_t desiredValue)
{
MBED_BARRIER();
*valuePtr = desiredValue;
MBED_BARRIER();
}
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
MBED_FORCEINLINE void core_util_atomic_store_s32(volatile int32_t *valuePtr, int32_t desiredValue)
{
MBED_BARRIER();
*valuePtr = desiredValue;
MBED_BARRIER();
}
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
MBED_FORCEINLINE void core_util_atomic_store_s64(volatile int64_t *valuePtr, int64_t desiredValue)
{
core_util_atomic_store_u64((volatile uint64_t *)valuePtr, (uint64_t)desiredValue);
}
/**
* Atomic store.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
*/
MBED_FORCEINLINE void core_util_atomic_store_bool(volatile bool *valuePtr, bool desiredValue)
{
MBED_BARRIER();
*valuePtr = desiredValue;
MBED_BARRIER();
}
/**
* Atomic store.
* @param valuePtr Target memory location.
@ -469,6 +469,101 @@ MBED_FORCEINLINE void core_util_atomic_store_ptr(void *volatile *valuePtr, void
MBED_BARRIER();
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
uint8_t core_util_atomic_exchange_u8(volatile uint8_t *valuePtr, uint8_t desiredValue);
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
uint16_t core_util_atomic_exchange_u16(volatile uint16_t *valuePtr, uint16_t desiredValue);
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
uint32_t core_util_atomic_exchange_u32(volatile uint32_t *valuePtr, uint32_t desiredValue);
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
uint64_t core_util_atomic_exchange_u64(volatile uint64_t *valuePtr, uint64_t desiredValue);
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
MBED_FORCEINLINE int8_t core_util_atomic_exchange_s8(volatile int8_t *valuePtr, int8_t desiredValue)
{
return (int8_t)core_util_atomic_exchange_u8((volatile uint8_t *)valuePtr, (uint8_t)desiredValue);
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
MBED_FORCEINLINE int16_t core_util_atomic_exchange_s16(volatile int16_t *valuePtr, int16_t desiredValue)
{
return (int16_t)core_util_atomic_exchange_u16((volatile uint16_t *)valuePtr, (uint16_t)desiredValue);
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
MBED_FORCEINLINE int32_t core_util_atomic_exchange_s32(volatile int32_t *valuePtr, int32_t desiredValue)
{
return (int32_t)core_util_atomic_exchange_u32((volatile uint32_t *)valuePtr, (uint32_t)desiredValue);
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
MBED_FORCEINLINE int64_t core_util_atomic_exchange_s64(volatile int64_t *valuePtr, int64_t desiredValue)
{
return (int64_t)core_util_atomic_exchange_u64((volatile uint64_t *)valuePtr, (uint64_t)desiredValue);
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
MBED_FORCEINLINE bool core_util_atomic_exchange_bool(volatile bool *valuePtr, bool desiredValue)
{
return (bool)core_util_atomic_exchange_u8((volatile uint8_t *)valuePtr, desiredValue);
}
/**
* Atomic exchange.
* @param valuePtr Target memory location.
* @param desiredValue The value to store.
* @return The previous value.
*/
void *core_util_atomic_exchange_ptr(void *volatile *valuePtr, void *desiredValue);
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
@ -493,6 +588,58 @@ uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta);
*/
uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta);
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
* @param delta The amount being incremented.
* @return The new incremented value.
*/
uint64_t core_util_atomic_incr_u64(volatile uint64_t *valuePtr, uint64_t delta);
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
* @param delta The amount being incremented.
* @return The new incremented value.
*/
MBED_FORCEINLINE int8_t core_util_atomic_incr_s8(volatile int8_t *valuePtr, int8_t delta)
{
return (int8_t)core_util_atomic_incr_u8((volatile uint8_t *)valuePtr, (uint8_t)delta);
}
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
* @param delta The amount being incremented.
* @return The new incremented value.
*/
MBED_FORCEINLINE int16_t core_util_atomic_incr_s16(volatile int16_t *valuePtr, int16_t delta)
{
return (int16_t)core_util_atomic_incr_u16((volatile uint16_t *)valuePtr, (uint16_t)delta);
}
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
* @param delta The amount being incremented.
* @return The new incremented value.
*/
MBED_FORCEINLINE int32_t core_util_atomic_incr_s32(volatile int32_t *valuePtr, int32_t delta)
{
return (int32_t)core_util_atomic_incr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
}
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
* @param delta The amount being incremented.
* @return The new incremented value.
*/
MBED_FORCEINLINE int64_t core_util_atomic_incr_s64(volatile int64_t *valuePtr, int64_t delta)
{
return (int64_t)core_util_atomic_incr_u64((volatile uint64_t *)valuePtr, (uint64_t)delta);
}
/**
* Atomic increment.
* @param valuePtr Target memory location being incremented.
@ -528,6 +675,58 @@ uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta);
*/
uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta);
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.
* @param delta The amount being decremented.
* @return The new decremented value.
*/
uint64_t core_util_atomic_decr_u64(volatile uint64_t *valuePtr, uint64_t delta);
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.
* @param delta The amount being decremented.
* @return The new decremented value.
*/
MBED_FORCEINLINE int8_t core_util_atomic_decr_s8(volatile int8_t *valuePtr, int8_t delta)
{
return (int8_t)core_util_atomic_decr_u8((volatile uint8_t *)valuePtr, (uint8_t)delta);
}
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.
* @param delta The amount being decremented.
* @return The new decremented value.
*/
MBED_FORCEINLINE int16_t core_util_atomic_decr_s16(volatile int16_t *valuePtr, int16_t delta)
{
return (int16_t)core_util_atomic_decr_u16((volatile uint16_t *)valuePtr, (uint16_t)delta);
}
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.
* @param delta The amount being decremented.
* @return The new decremented value.
*/
MBED_FORCEINLINE int32_t core_util_atomic_decr_s32(volatile int32_t *valuePtr, int32_t delta)
{
return (int32_t)core_util_atomic_decr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
}
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.
* @param delta The amount being decremented.
* @return The new decremented value.
*/
MBED_FORCEINLINE int64_t core_util_atomic_decr_s64(volatile int64_t *valuePtr, int64_t delta)
{
return (int64_t)core_util_atomic_decr_u64((volatile uint64_t *)valuePtr, (uint64_t)delta);
}
/**
* Atomic decrement.
* @param valuePtr Target memory location being decremented.