Macros | Typedefs | Functions

le_mutex.h File Reference

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Macros

#define LE_MUTEX_DECLARE_REF(refName)
 

Typedefs

typedef struct le_mutex * le_mutex_Ref_t
 

Functions

le_mutex_Ref_t le_mutex_CreateRecursive (const char *nameStr)
 
le_mutex_Ref_t le_mutex_CreateNonRecursive (const char *nameStr)
 
void le_mutex_Delete (le_mutex_Ref_t mutexRef)
 
void le_mutex_Lock (le_mutex_Ref_t mutexRef)
 
le_result_t le_mutex_TryLock (le_mutex_Ref_t mutexRef)
 
void le_mutex_Unlock (le_mutex_Ref_t mutexRef)
 

Detailed Description

Legato Mutex API include file.

Copyright (C) Sierra Wireless Inc.

Macro Definition Documentation

#define LE_MUTEX_DECLARE_REF (   refName)
Value:
static le_mutex_Ref_t refName; \
    static inline void Lock(void) { le_mutex_Lock(refName); } \
    static inline void Unlock(void) { le_mutex_Unlock(refName); }
le_mutex_Ref_t
struct le_mutex * le_mutex_Ref_t
Definition: le_mutex.h:96


le_mutex_Lock
void le_mutex_Lock(le_mutex_Ref_t mutexRef)


le_mutex_Unlock
void le_mutex_Unlock(le_mutex_Ref_t mutexRef)

Declare a static mutex reference variable and accessor functions.

This is handy when you need a single, file-scope mutex for use inside your module to protect other file-scope data structures from multi-threaded race conditions.

Adding the line 

    1 LE_MUTEX_DECLARE_REF(MyMutexRef);

near the top of your file will create a file-scope variable called "MyMutexRef" of type le_mutex_Ref_t and functions called "Lock" and "Unlock" that access that variable.

See c_mutex_locking_tips for more information.

Parameters
refNameName of the mutex reference variable.
Returns
Nothing.

Typedef Documentation

typedef struct le_mutex* le_mutex_Ref_t

Reference to a Mutex object.

Function Documentation

le_mutex_Ref_t le_mutex_CreateNonRecursive ( const char *  nameStr)

Create a Non-Recursive mutex.

Returns
Returns a reference to the mutex.
Note
Terminates the process on failure, no need to check the return value for errors.
Parameters
[in]nameStrName of the mutex
le_mutex_Ref_t le_mutex_CreateRecursive ( const char *  nameStr)

Create a Recursive mutex.

Returns
Returns a reference to the mutex.
Note
Terminates the process on failure, no need to check the return value for errors.
Parameters
[in]nameStrName of the mutex
void le_mutex_Delete ( le_mutex_Ref_t  mutexRef)

Delete a mutex.

Returns
Nothing.
Parameters
[in]mutexRefMutex reference
void le_mutex_Lock ( le_mutex_Ref_t  mutexRef)

Lock a mutex.

Returns
Nothing.
Parameters
[in]mutexRefMutex reference
le_result_t le_mutex_TryLock ( le_mutex_Ref_t  mutexRef)

Try a lock on a mutex.

Locks a mutex, if no other thread holds it. Otherwise, returns without locking.

Returns
  • LE_OK if mutex was locked.
  • LE_WOULD_BLOCK if mutex was already held by someone else.
Parameters
[in]mutexRefMutex reference
void le_mutex_Unlock ( le_mutex_Ref_t  mutexRef)

Unlock a mutex.

Returns
Nothing.
Parameters
[in]mutexRefMutex reference