Diff: platform/mbed_stats.h

Revision:

171:3a7713b1edbc

Parent:

170:e95d10626187

Child:

172:65be27845400

--- a/platform/mbed_stats.h	Thu Sep 06 13:39:34 2018 +0100
+++ b/platform/mbed_stats.h	Thu Nov 08 11:45:42 2018 +0000
@@ -42,16 +42,17 @@
  * struct mbed_stats_heap_t definition
  */
 typedef struct {
-    uint32_t current_size;      /**< Bytes allocated currently. */
-    uint32_t max_size;          /**< Max bytes allocated at a given time. */
-    uint32_t total_size;        /**< Cumulative sum of bytes ever allocated. */
-    uint32_t reserved_size;     /**< Current number of bytes allocated for the heap. */
-    uint32_t alloc_cnt;         /**< Current number of allocations. */
-    uint32_t alloc_fail_cnt;    /**< Number of failed allocations. */
+    uint32_t current_size;      /**< Bytes currently allocated on the heap */
+    uint32_t max_size;          /**< Maximum bytes allocated on the heap at one time since reset */
+    uint32_t total_size;        /**< Cumulative sum of bytes allocated on the heap that have not been freed */
+    uint32_t reserved_size;     /**< Current number of bytes reserved for the heap */
+    uint32_t alloc_cnt;         /**< Current number of allocations that have not been freed since reset */
+    uint32_t alloc_fail_cnt;    /**< Number of failed allocations since reset */
+    uint32_t overhead_size;     /**< Number of bytes used to store heap statistics. This overhead takes up space on the heap, reducing the available heap space */
 } mbed_stats_heap_t;
 
 /**
- *  Fill the passed in heap stat structure with heap stats.
+ *  Fill the passed in heap stat structure with the heap statistics.
  *
  *  @param stats    A pointer to the mbed_stats_heap_t structure to fill
  */
@@ -61,14 +62,14 @@
  * struct mbed_stats_stack_t definition
  */
 typedef struct {
-    uint32_t thread_id;         /**< Identifier for thread that owns the stack or 0 if multiple threads. */
-    uint32_t max_size;          /**< Maximum number of bytes used on the stack. */
-    uint32_t reserved_size;     /**< Current number of bytes allocated for the stack. */
-    uint32_t stack_cnt;         /**< Number of stacks stats accumulated in the structure. */
+    uint32_t thread_id;         /**< Identifier for the thread that owns the stack or 0 if representing accumulated statistics */
+    uint32_t max_size;          /**< Maximum number of bytes used on the stack since the thread was started */
+    uint32_t reserved_size;     /**< Current number of bytes reserved for the stack */
+    uint32_t stack_cnt;         /**< The number of stacks represented in the accumulated statistics or 1 if repesenting a single stack */
 } mbed_stats_stack_t;
 
 /**
- *  Fill the passed in structure with stack stats accumulated for all threads. The thread_id will be 0
+ *  Fill the passed in structure with stack statistics accumulated for all threads. The thread_id will be 0
  *  and stack_cnt will represent number of threads.
  *
  *  @param stats    A pointer to the mbed_stats_stack_t structure to fill
@@ -76,12 +77,13 @@
 void mbed_stats_stack_get(mbed_stats_stack_t *stats);
 
 /**
- *  Fill the passed array of stat structures with the stack stats for each available thread.
+ *  Fill the passed array of structures with the stack statistics for each available thread.
  *
  *  @param stats    A pointer to an array of mbed_stats_stack_t structures to fill
  *  @param count    The number of mbed_stats_stack_t structures in the provided array
- *  @return         The number of mbed_stats_stack_t structures that have been filled,
- *                  this is equal to the number of stacks on the system.
+ *  @return         The number of mbed_stats_stack_t structures that have been filled.
+ *                  If the number of stacks on the system is less than or equal to count, it will equal the number of stacks on the system.
+ *                  If the number of stacks on the system is greater than count, it will equal count.
  */
 size_t mbed_stats_stack_get_each(mbed_stats_stack_t *stats, size_t count);
 
@@ -89,10 +91,10 @@
  * struct mbed_stats_cpu_t definition
  */
 typedef struct {
-    us_timestamp_t uptime;            /**< Time since system is up and running */
-    us_timestamp_t idle_time;         /**< Time spent in idle thread since system is up and running */
-    us_timestamp_t sleep_time;        /**< Time spent in sleep since system is up and running */
-    us_timestamp_t deep_sleep_time;   /**< Time spent in deep sleep since system is up and running */
+    us_timestamp_t uptime;            /**< Time since the system has started */
+    us_timestamp_t idle_time;         /**< Time spent in the idle thread since the system has started */
+    us_timestamp_t sleep_time;        /**< Time spent in sleep since the system has started */
+    us_timestamp_t deep_sleep_time;   /**< Time spent in deep sleep since the system has started */
 } mbed_stats_cpu_t;
 
 /**
@@ -106,21 +108,22 @@
  * struct mbed_stats_thread_t definition
  */
 typedef struct {
-    uint32_t id;                /**< Thread Object Identifier */
-    uint32_t state;             /**< Thread Object State */
-    uint32_t priority;          /**< Thread Priority */
-    uint32_t stack_size;        /**< Thread Stack Size */
-    uint32_t stack_space;       /**< Thread remaining stack size */
-    const char   *name;         /**< Thread Object name */
+    uint32_t id;                /**< ID of the thread */
+    uint32_t state;             /**< State of the thread */
+    uint32_t priority;          /**< Priority of the thread (higher number indicates higher priority) */
+    uint32_t stack_size;        /**< Current number of bytes reserved for the stack */
+    uint32_t stack_space;       /**< Current number of free bytes remaining on the stack */
+    const char   *name;         /**< Name of the thread */
 } mbed_stats_thread_t;
 
 /**
- *  Fill the passed array of stat structures with the thread stats for each available thread.
+ *  Fill the passed array of stat structures with the thread statistics for each available thread.
  *
  *  @param stats    A pointer to an array of mbed_stats_thread_t structures to fill
  *  @param count    The number of mbed_stats_thread_t structures in the provided array
- *  @return         The number of mbed_stats_thread_t structures that have been filled,
- *                  this is equal to the number of threads on the system.
+ *  @return         The number of mbed_stats_thread_t structures that have been filled.
+ *                  If the number of threads on the system is less than or equal to count, it will equal the number of threads on the system.
+ *                  If the number of threads on the system is greater than count, it will equal count.
  */
 size_t mbed_stats_thread_get_each(mbed_stats_thread_t *stats, size_t count);
 
@@ -137,14 +140,14 @@
  * struct mbed_stats_sys_t definition
  */
 typedef struct {
-    uint32_t os_version;                /**< Mbed OS Version (Release only) */
-    uint32_t cpu_id;                    /**< CPUID Register data (Cortex-M only supported) */
+    uint32_t os_version;                /**< Mbed OS version (populated only for tagged releases) */
+    uint32_t cpu_id;                    /**< CPUID register data (Cortex-M only supported) */
     mbed_compiler_id_t compiler_id;     /**< Compiler ID \ref mbed_compiler_id_t */
     uint32_t compiler_version;          /**< Compiler version */
 } mbed_stats_sys_t;
 
 /**
- *  Fill the passed in sys stat structure with system stats.
+ *  Fill the passed in system stat structure with system statistics.
  *
  *  @param stats    A pointer to the mbed_stats_sys_t structure to fill
  */