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Support for MacOS

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Split semaphore classes into Semaphore and NamedSemaphore
Semaphore is implemented with Grand Central Dispatch
NamedSemaphore uses the spin lock approach like in boost for sem_timedwait
sem_getvalue is not supported on MacOS and therefore was removed
Fixed bug (*gatewayaddress_len > 0) in MQTTSNSearchClient.c

Signed-off-by: Jochen Wilhelmy <jochen.wilhelmy@gmail.com>
This commit is contained in:
Jochen Wilhelmy
2020-01-17 17:40:56 +01:00
parent e64e817f80
commit d6effc8074
8 changed files with 135 additions and 88 deletions
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28
MQTTSNGateway/src/linux/Threading.h
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@@ -19,6 +19,9 @@
#include <pthread.h>
#include <semaphore.h>
#ifdef __APPLE__
#include <dispatch/dispatch.h>
#endif
#include "MQTTSNGWDefines.h"
namespace MQTTSNGW
@@ -52,17 +55,34 @@ private:
class Semaphore
{
public:
Semaphore();
Semaphore(unsigned int val);
Semaphore(const char* name, unsigned int val);
Semaphore(unsigned int val = 0);
~Semaphore();
void post(void);
void wait(void);
void timedwait(uint16_t millsec);
private:
#ifdef __APPLE__
dispatch_semaphore_t _sem;
#else
sem_t _sem;
#endif
};
/*=====================================
Class NamedSemaphore
====================================*/
class NamedSemaphore
{
public:
NamedSemaphore(const char* name, unsigned int val);
~NamedSemaphore();
void post(void);
void wait(void);
void timedwait(uint16_t millsec);
private:
sem_t* _psem;
sem_t _sem;
char* _name;
};