portability: cmsis: Avoid copying objects names into control block

Instead, just store the pointer to the string provided as part of the
RTOS object init attributes.

Signed-off-by: Utsav Munendra <utsavm@meta.com>

include/zephyr/portability/cmsis_types.h

@@ -11,9 +11,6 @@
 #include <zephyr/kernel.h>
 #include <zephyr/portability/cmsis_os2.h>
 
-/** @brief Size for names of RTOS objects. */
-#define CMSIS_OBJ_NAME_MAX_LEN 16
-
 /**
  * @brief Control block for a CMSIS-RTOSv2 thread.
  *
@@ -40,7 +37,7 @@ struct cmsis_rtos_timer_cb {
 	osTimerType_t type;
 	uint32_t status;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 	void (*callback_function)(void *argument);
 	void *arg;
 };
@@ -54,7 +51,7 @@ struct cmsis_rtos_timer_cb {
 struct cmsis_rtos_mutex_cb {
 	struct k_mutex z_mutex;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 	uint32_t state;
 };
 
@@ -67,7 +64,7 @@ struct cmsis_rtos_mutex_cb {
 struct cmsis_rtos_semaphore_cb {
 	struct k_sem z_semaphore;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 };
 
 /**
@@ -81,7 +78,7 @@ struct cmsis_rtos_mempool_cb {
 	void *pool;
 	char is_dynamic_allocation;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 };
 
 /**
@@ -95,7 +92,7 @@ struct cmsis_rtos_msgq_cb {
 	void *pool;
 	char is_dynamic_allocation;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 };
 
 /**
@@ -109,7 +106,7 @@ struct cmsis_rtos_event_cb {
 	struct k_poll_event poll_event;
 	uint32_t signal_results;
 	bool is_cb_dynamic_allocation;
-	char name[CMSIS_OBJ_NAME_MAX_LEN];
+	const char *name;
 };
 
 #endif

subsys/portability/cmsis_rtos_v2/event_flags.c

@@ -50,11 +50,7 @@ osEventFlagsId_t osEventFlagsNew(const osEventFlagsAttr_t *attr)
 			  &events->poll_signal);
 	events->signal_results = 0U;
 
-	if (attr->name == NULL) {
+	events->name = (attr->name == NULL) ? init_event_flags_attrs.name : attr->name;
-		strncpy(events->name, init_event_flags_attrs.name, sizeof(events->name) - 1);
-	} else {
-		strncpy(events->name, attr->name, sizeof(events->name) - 1);
-	}
 
 	return (osEventFlagsId_t)events;
 }
@@ -207,16 +203,16 @@ uint32_t osEventFlagsWait(osEventFlagsId_t ef_id, uint32_t flags, uint32_t optio
 
 /**
  * @brief Get name of an Event Flags object.
+ * This function may be called from Interrupt Service Routines.
  */
 const char *osEventFlagsGetName(osEventFlagsId_t ef_id)
 {
 	struct cmsis_rtos_event_cb *events = (struct cmsis_rtos_event_cb *)ef_id;
 
-	if (!k_is_in_isr() && (ef_id != NULL)) {
+	if (events == NULL) {
-		return events->name;
-	} else {
 		return NULL;
 	}
+	return events->name;
 }
 
 /**

subsys/portability/cmsis_rtos_v2/mempool.c

@@ -84,11 +84,7 @@ osMemoryPoolId_t osMemoryPoolNew(uint32_t block_count, uint32_t block_size,
 		return NULL;
 	}
 
-	if (attr->name == NULL) {
+	mslab->name = (attr->name == NULL) ? init_mslab_attrs.name : attr->name;
-		strncpy(mslab->name, init_mslab_attrs.name, sizeof(mslab->name) - 1);
-	} else {
-		strncpy(mslab->name, attr->name, sizeof(mslab->name) - 1);
-	}
 
 	return (osMemoryPoolId_t)mslab;
 }
@@ -152,16 +148,16 @@ osStatus_t osMemoryPoolFree(osMemoryPoolId_t mp_id, void *block)
 
 /**
  * @brief Get name of a Memory Pool object.
+ * This function may be called from Interrupt Service Routines.
  */
 const char *osMemoryPoolGetName(osMemoryPoolId_t mp_id)
 {
 	struct cmsis_rtos_mempool_cb *mslab = (struct cmsis_rtos_mempool_cb *)mp_id;
 
-	if (!k_is_in_isr() && (mslab != NULL)) {
+	if (mslab == NULL) {
-		return mslab->name;
-	} else {
 		return NULL;
 	}
+	return mslab->name;
 }
 
 /**

subsys/portability/cmsis_rtos_v2/msgq.c

@@ -79,11 +79,7 @@ osMessageQueueId_t osMessageQueueNew(uint32_t msg_count, uint32_t msg_size,
 
 	k_msgq_init(&msgq->z_msgq, msgq->pool, msg_size, msg_count);
 
-	if (attr->name == NULL) {
+	msgq->name = (attr->name == NULL) ? init_msgq_attrs.name : attr->name;
-		strncpy(msgq->name, init_msgq_attrs.name, sizeof(msgq->name) - 1);
-	} else {
-		strncpy(msgq->name, attr->name, sizeof(msgq->name) - 1);
-	}
 
 	return (osMessageQueueId_t)(msgq);
 }
@@ -222,16 +218,16 @@ uint32_t osMessageQueueGetSpace(osMessageQueueId_t msgq_id)
 
 /**
  * @brief Get name of a Message Queue object.
+ * This function may be called from Interrupt Service Routines.
  */
 const char *osMessageQueueGetName(osMessageQueueId_t msgq_id)
 {
 	struct cmsis_rtos_msgq_cb *msgq = (struct cmsis_rtos_msgq_cb *)msgq_id;
 
-	if (!k_is_in_isr() && (msgq_id != NULL)) {
+	if (msgq == NULL) {
-		return msgq->name;
-	} else {
 		return NULL;
 	}
+	return msgq->name;
 }
 
 /**

subsys/portability/cmsis_rtos_v2/mutex.c

@@ -51,11 +51,7 @@ osMutexId_t osMutexNew(const osMutexAttr_t *attr)
 	k_mutex_init(&mutex->z_mutex);
 	mutex->state = attr->attr_bits;
 
-	if (attr->name == NULL) {
+	mutex->name = (attr->name == NULL) ? init_mutex_attrs.name : attr->name;
-		strncpy(mutex->name, init_mutex_attrs.name, sizeof(mutex->name) - 1);
-	} else {
-		strncpy(mutex->name, attr->name, sizeof(mutex->name) - 1);
-	}
 
 	return (osMutexId_t)mutex;
 }
@@ -156,13 +152,16 @@ osThreadId_t osMutexGetOwner(osMutexId_t mutex_id)
 	return get_cmsis_thread_id(mutex->z_mutex.owner);
 }
 
+/**
+ * @brief Get name of a mutex.
+ * This function may be called from Interrupt Service Routines.
+ */
 const char *osMutexGetName(osMutexId_t mutex_id)
 {
 	struct cmsis_rtos_mutex_cb *mutex = (struct cmsis_rtos_mutex_cb *)mutex_id;
 
-	if (k_is_in_isr() || (mutex == NULL)) {
+	if (mutex == NULL) {
 		return NULL;
 	}
-
 	return mutex->name;
 }

subsys/portability/cmsis_rtos_v2/semaphore.c

@@ -47,11 +47,7 @@ osSemaphoreId_t osSemaphoreNew(uint32_t max_count, uint32_t initial_count,
 
 	k_sem_init(&semaphore->z_semaphore, initial_count, max_count);
 
-	if (attr->name == NULL) {
+	semaphore->name = (attr->name == NULL) ? init_sema_attrs.name : attr->name;
-		strncpy(semaphore->name, init_sema_attrs.name, sizeof(semaphore->name) - 1);
-	} else {
-		strncpy(semaphore->name, attr->name, sizeof(semaphore->name) - 1);
-	}
 
 	return (osSemaphoreId_t)semaphore;
 }
@@ -148,13 +144,16 @@ osStatus_t osSemaphoreDelete(osSemaphoreId_t semaphore_id)
 	return osOK;
 }
 
+/**
+ * @brief Get name of a semaphore.
+ * This function may be called from Interrupt Service Routines.
+ */
 const char *osSemaphoreGetName(osSemaphoreId_t semaphore_id)
 {
 	struct cmsis_rtos_semaphore_cb *semaphore = (struct cmsis_rtos_semaphore_cb *)semaphore_id;
 
-	if (!k_is_in_isr() && (semaphore_id != NULL)) {
+	if (semaphore == NULL) {
-		return semaphore->name;
-	} else {
 		return NULL;
 	}
+	return semaphore->name;
 }

subsys/portability/cmsis_rtos_v2/timer.c

@@ -67,11 +67,7 @@ osTimerId_t osTimerNew(osTimerFunc_t func, osTimerType_t type, void *argument,
 
 	k_timer_init(&timer->z_timer, zephyr_timer_wrapper, NULL);
 
-	if (attr->name == NULL) {
+	timer->name = (attr->name == NULL) ? init_timer_attrs.name : attr->name;
-		strncpy(timer->name, init_timer_attrs.name, sizeof(timer->name) - 1);
-	} else {
-		strncpy(timer->name, attr->name, sizeof(timer->name) - 1);
-	}
 
 	return (osTimerId_t)timer;
 }
@@ -153,15 +149,15 @@ osStatus_t osTimerDelete(osTimerId_t timer_id)
 
 /**
  * @brief Get name of a timer.
+ * This function may be called from Interrupt Service Routines.
  */
 const char *osTimerGetName(osTimerId_t timer_id)
 {
 	struct cmsis_rtos_timer_cb *timer = (struct cmsis_rtos_timer_cb *)timer_id;
 
-	if (k_is_in_isr() || (timer == NULL)) {
+	if (timer == NULL) {
 		return NULL;
 	}
-
 	return timer->name;
 }