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Automatically adjust buffer size based on available memory.

This commit is contained in:
Marcio T 2021-12-05 13:30:48 -07:00
parent 1af5e74aea
commit b5f0328beb
1 changed files with 24 additions and 12 deletions
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36
mac-cpp-source/tip/tip_aspi.cpp
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@ -71,10 +71,10 @@ struct DEFECT_LIST_HEADER {
#define DRIVE_A_SUPPORT_BIAS 32 // reduce total by 32 for DRIVE A support
#define BYTES_PER_SECTOR 512
#define MAX_SECTORS_PER_TEST 25
#define BYTES_PER_SECTOR 512
#define MAX_SECTORS_PER_TEST 128
#define BADNESS_THRESHOLD 10
#define BADNESS_THRESHOLD 10
#define SS_ERR 0x00000004
#define DEFECT_LIST_READ_ERROR 0x001c0003
@ -89,6 +89,7 @@ struct DEFECT_LIST_HEADER {
#define CHECK_CONDITION 0x02
TipPage CurrentPage;
long CurrentDevice = -1; // the device that's been recognized
long DriveCount = 0;
@ -108,6 +109,7 @@ long TestingPhase = 0; // 0 = not testing, no data ...
long PercentComplete;
long FirstLBASector;
long NumberOfLBAs;
long AdapterMaxSectors;
long LastLBAOnCartridge;
long SecondsElapsed;
long SoftErrors;
@ -922,14 +924,25 @@ Exit:
*******************************************************************************/
void TestTheDisk() {
void *pPatternBuffer = malloc(MAX_SECTORS_PER_TEST * BYTES_PER_SECTOR);
void *pUserDataBuffer = malloc(MAX_SECTORS_PER_TEST * BYTES_PER_SECTOR);
// setup the initital maximum tranfer ...
AdapterMaxSectors = MAX_SECTORS_PER_TEST; // limit to our max
if(pPatternBuffer == NULL || pUserDataBuffer == NULL) {
printf("Allocation error\n");
return;
void *pDataBuffer = 0;
for(;;) {
pDataBuffer = malloc(AdapterMaxSectors * BYTES_PER_SECTOR * 2);
if(pDataBuffer) break;
AdapterMaxSectors >>= 2; // we need to make it smaller
if(AdapterMaxSectors == 0) {
printf("Test buffer allocation failed!\n");
return;
}
}
printf("Allocated buffer of %ld bytes\n", AdapterMaxSectors * BYTES_PER_SECTOR);
void *pPatternBuffer = pDataBuffer;
void *pUserDataBuffer = (char*) pDataBuffer + AdapterMaxSectors * BYTES_PER_SECTOR;
StopApplicationTimer();
PreventProgramExit();
@ -950,7 +963,7 @@ void TestTheDisk() {
do {
ProcessPendingMessages();
NumberOfLBAs = MAX_SECTORS_PER_TEST;
NumberOfLBAs = AdapterMaxSectors;
if(LastLBAOnCartridge) {
if (FirstLBASector + NumberOfLBAs > LastLBAOnCartridge + 1) {
@ -967,7 +980,7 @@ void TestTheDisk() {
// get a random pattern of data to write
const long DataPattern = rand();
memset(pPatternBuffer, DataPattern, MAX_SECTORS_PER_TEST * BYTES_PER_SECTOR);
memset(pPatternBuffer, DataPattern, AdapterMaxSectors * BYTES_PER_SECTOR);
// update the cartridge's status
GetSpareSectorCounts(false); // update the Cart's Condition
@ -1005,8 +1018,7 @@ void TestTheDisk() {
// show that we're post-test
GetOut:
free(pPatternBuffer);
free(pUserDataBuffer);
free(pDataBuffer);
TestingPhase = UNTESTED;
UnlockAllMedia();