l3.libnazgul/src/bufferMap.c

#include "libnazgul.h"


void * msgBufferMap(msgSpace * space, int poolIndex, int bufferIndex) {
	void * resultAddr;
	int msPoolFd, buffersize;

	msgBufferInfoTabId bufferInfoTabId;
  int bufferInfoTabFd; 

  // TODO: r<>cuperer l'ID du BufferInfoTab;
  //strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);


  bufferInfoTabFd=shm_open(bufferInfoTabId,O_RDWR,SHM_DEFAULT_MODE);
  if (bufferInfoTabFd<0){
	NZG_ERROR("sem_open",bufferInfoTabId);
	goto ERROR;
  }


	if(bufferInfoTabFd == -1) {
		NZG_ERROR("shm_open", bufferInfoTabId);
		goto ERROR;
	}
	
	// mapper le buffer dans l'espace m<>moire du processus
	resultAddr=mmap(NULL, buffersize, PROT_WRITE|PROT_READ, MAP_SHARED, msPoolFd, (off_t)0);
	
	// TODO: poolDataTabId
	if(resultAddr == MAP_FAILED) {
		//NZG_ERROR("mmap", poolDataTabId);
		goto ERROR;
	}

	close(msPoolFd);
	
	return resultAddr;
ERROR:
  return NULL;
}