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Optimize file reading

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This commit is contained in:
Maschell 2022-08-08 11:55:13 +02:00
parent 991ba41a20
commit ff5d23cae2
1 changed files with 11 additions and 5 deletions
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16
source/fs/FSUtils.cpp
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@ -20,8 +20,13 @@ int32_t FSUtils::LoadFileToMem(const char *filepath, uint8_t **inbuffer, uint32_
return -1;
}
uint32_t filesize = lseek(iFd, 0, SEEK_END);
lseek(iFd, 0, SEEK_SET);
struct stat file_stat;
int rc = fstat(iFd, &file_stat);
if (rc < 0) {
close(iFd);
return -4;
}
uint32_t filesize = file_stat.st_size;
auto *buffer = (uint8_t *) memalign(0x40, ROUNDUP(filesize, 0x40));
if (buffer == nullptr) {
@ -29,17 +34,18 @@ int32_t FSUtils::LoadFileToMem(const char *filepath, uint8_t **inbuffer, uint32_
return -2;
}
uint32_t blocksize = 0x20000;
uint32_t blocksize = 0x80000;
uint32_t done = 0;
int32_t readBytes = 0;
int32_t readBytes;
while (done < filesize) {
if (done + blocksize > filesize) {
blocksize = filesize - done;
}
readBytes = read(iFd, buffer + done, blocksize);
if (readBytes <= 0)
if (readBytes <= 0) {
break;
}
done += readBytes;
}