Salut tout le monde

J'ai un programme qui reconstitue un fichier à partir de 8 fichiers écrits sur 8 disques durs différents.
Pour la reconstruction, le programme lit le premier bloc de 12 Mo du premier fichier, puis l'écrit dans le fichier de destination, puis le premier bloc de 12 Mo du second fichier,.... premier bloc du huitième fichier, puis second bloc de 12 Mo du premier fichier, etc, jusqu'à la fin des huit fichiers (qui font tous la même taille et dont la taille est un multiple entier de 12 Mo)

Pour cela, j'utilise les fonctions ReadFile et WriteFile. Mais au bout d'un certain nombre de boucles, le programme plante lors d'une écriture dans le fichier destination. A chaque fois le fichier destination est au alentour de 32-33 Go.
Voilà le code, je ne sais pas trop pourquoi ça plante.

Pour infos, chacun des fichier source fait 70 068 Mo et donc le fichier destination devrait faire 560 544 Mo.


Code : Sélectionner tout - Visualiser dans une fenêtre à part
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void* export_data(void *arg) {
 
	WIN32_FILE_ATTRIBUTE_DATA attr;
 
	int i = 0, size = 0;
	LPVOID buffer;
	HANDLE FileDest;
	int NbBlocks;
	unsigned long nb_ecrit;
 
	char dirnameinput[1024];
	char filenameinput[1024];
 
	char destfile[1024];
 
	char filename1[1024];
	char filename2[1024];
	char filename3[1024];
	char filename4[1024];
	char filename5[1024];
	char filename6[1024];
	char filename7[1024];
	char filename8[1024];
 
	char commentfilename[1024];
	char destcommentfilename[1024];
 
	int nb_of_free_clusters, nb_bytes_per_sector, nb_sectors_per_cluster, nb_free_blocks;
	double free_space_first_disk;
 
	double filesize;
	unsigned int *ptr;
 
	acquisition->file_well_close = 0;
	acquisition->int_field = 0;
 
	continue_acquisition = 1;
 
	strcpy(dirnameinput,command->dirname);
	strcpy(filenameinput,command->filename);
 
#ifdef _DEBUG_CONFIG_
	printf("Export message\n");
	printf("command->filename  : %s\n",filenameinput);
	printf("command->dirname  : %s\n",dirnameinput);
#endif
 
	strcpy(destfile, dirnameinput);
	strcat(destfile, "\\");
	strcat(destfile, filenameinput);
 
	strcpy(filename1,PATH_1);
	strcat(filename1, "\\");
	strcat(filename1, filenameinput);
 
	strcpy(filename2,PATH_2);
	strcat(filename2, "\\");
	strcat(filename2, filenameinput);
	strcat(filename2,"2");  // pour extention .bin2
 
	strcpy(filename3,PATH_3);
	strcat(filename3, "\\");
	strcat(filename3, filenameinput);
	strcat(filename3,"3");  // pour extention .bin3
 
	strcpy(filename4,PATH_4);
	strcat(filename4, "\\");
	strcat(filename4, filenameinput);
	strcat(filename4,"4");  // pour extention .bin4
 
	strcpy(filename5,PATH_5);
	strcat(filename5, "\\");
	strcat(filename5, filenameinput);
	strcat(filename5,"5");  // pour extention .bin5
 
	strcpy(filename6,PATH_6);
	strcat(filename6, "\\");
	strcat(filename6, filenameinput);
	strcat(filename6,"6");  // pour extention .bin6
 
	//oliv
	strcpy(filename7,PATH_7);
	strcat(filename7, "\\");
	strcat(filename7, filenameinput);
	strcat(filename7,"7");  // pour extention .bin7
 
	//oliv
	strcpy(filename8,PATH_8);
	strcat(filename8, "\\");
	strcat(filename8, filenameinput);
	strcat(filename8,"8");  // pour extention .bin8
 
#ifdef _DEBUG_CONFIG_
	printf("Export data into %s\n", destfile);
	printf("Source file1 %s\n", filename1);
	printf("Source file2 %s\n", filename2);
	printf("Source file3 %s\n", filename3);
	printf("Source file4 %s\n", filename4);
	printf("Source file5 %s\n", filename5);
	printf("Source file6 %s\n", filename6);
	//oliv
	printf("Source file7 %s\n", filename7);
	printf("Source file8 %s\n", filename8);
#endif
 
	FileDest = CreateFile(destfile, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
 
	File_F = CreateFile(filename1, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_G = CreateFile(filename2, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_H = CreateFile(filename3, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_I = CreateFile(filename4, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_J = CreateFile(filename5, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_K = CreateFile(filename6, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_L = CreateFile(filename7, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
	File_M = CreateFile(filename8, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 
 
	//Taille du fichier source
	GetFileAttributesEx(filename1, GetFileExInfoStandard, &attr );
	filesize = 4294967296*attr.nFileSizeHigh+attr.nFileSizeLow;
 
 
	NbBlocks = (int)(filesize/T_BLOCK/2); 
 
#ifdef _DEBUG_CONFIG_
	printf("filesize = %f\n",filesize);
	printf("NbBlocks = %d\n",NbBlocks);
#endif
 
	// Espace libre sur IDE:
    GetDiskFreeSpace(IDE_PATH, &nb_sectors_per_cluster, &nb_bytes_per_sector,&nb_of_free_clusters, NULL);
 
 
#ifdef _DEBUG_CONFIG_
	printf("nb_sectors_per_cluster = %f\n",(double)nb_sectors_per_cluster);
	printf("nb_bytes_per_sector = %f\n",(double)nb_bytes_per_sector);
	printf("nb_of_free_clusters = %f\n",(double)nb_of_free_clusters);
#endif
 
 
 
	free_space_first_disk = (double)((double)nb_sectors_per_cluster*(double)nb_of_free_clusters*(double)nb_bytes_per_sector);
 
	// nb de blocs libres:
	nb_free_blocks = (int)(free_space_first_disk/T_BLOCK/2); // Attention: les blocs réelles font 2*T_BLOCK.
 
#ifdef _DEBUG_CONFIG_
	printf("free_space_first_disk = %f\n",free_space_first_disk);
	printf("nb_free_blocks = %d\n",nb_free_blocks);
#endif
 
 
	// Limitation pour ne pas depasser capacité disc.
	if (nb_free_blocks < (NbBlocks*8))		// 4 discs => a remplacer qd 6
		NbBlocks = (int)(nb_free_blocks/8); // 4 discs => a remplacer qd 6
 
#ifdef _DEBUG_CONFIG_
	printf("NbBlocks = %d\n",NbBlocks);
#endif
 
	buffer = VirtualAlloc(NULL,T_BLOCK*2,MEM_COMMIT,PAGE_READWRITE);
	if (buffer==NULL) goto buffererror;
 
	i=0;
 
		do
		{ 		
		if( ! ReadFile(File_F, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
[color=red]->		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;[/color]
 
		if( ! ReadFile(File_G, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_H, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_I, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_J, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_K, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_L, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		if( ! ReadFile(File_M, buffer, T_BLOCK*2, &size, NULL)) goto readerror;
		if( ! WriteFile(FileDest, buffer, size, &nb_ecrit, NULL)) goto writeerror;
 
		acquisition->int_field = (int)((double)((double)(i+1)/(double)NbBlocks*100));
 
 
		#ifdef _DEBUG_CONFIG_
		printf("i = %d\n",i);
		printf("continue_acquisition = %d\n",continue_acquisition);
		printf("NbBlocks = %d\n",NbBlocks);
 
		#endif
 
		i++;
 
		}while((i<NbBlocks)&&(continue_acquisition));
 
 
 
		// Export comment file:
 
	strcpy(commentfilename, PATH_1);	
	strcat(commentfilename,"\\");
	strcat(commentfilename,filenameinput);
	strcat(commentfilename,".txt");
 
	strcpy(destcommentfilename, dirnameinput);	
	strcat(destcommentfilename,"\\");
	strcat(destcommentfilename,filenameinput);
	strcat(destcommentfilename,".txt");
 
	CopyFile(commentfilename,destcommentfilename,0);
 
 
	continue_acquisition = 0;
 
 
 
goto __ok;
 
writeerror:
printf("Error on write\n");
goto __ok;
 
readerror:
printf("Error on read\n");
goto __ok;
 
buffererror:
printf("Buffer error\n");
 
__ok:
 
		CloseHandle(FileDest);
		CloseHandle(File_F);
		CloseHandle(File_G);
		CloseHandle(File_H);
		CloseHandle(File_I);
		CloseHandle(File_J);
		CloseHandle(File_K);
		//oliv
		CloseHandle(File_L);
		CloseHandle(File_M);
 
		acquisition->file_well_close = 1;
 
#ifdef _DEBUG_CONFIG_
		printf("test_fich = %d\n",test_fich);
		printf("Data successfully exported\n");
#endif
 
	VirtualFree(buffer,T_BLOCK*2,MEM_DECOMMIT);
 
	return NULL;
}