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[checksum] use multiple threads and double buffering

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* Can reduce the duration of checksum computations by about
  1/3rd, if you have quad core CPU or better.
This commit is contained in:
Pete Batard 2016-02-29 21:36:28 +00:00
parent bab3453f4d
commit e6d3653cac
5 changed files with 185 additions and 33 deletions
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7
src/rufus.h
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@ -60,6 +60,7 @@
#define MAX_SECTORS_TO_CLEAR 128 // nb sectors to zap when clearing the MBR/GPT (must be >34)
#define MBR_UEFI_MARKER 0x49464555 // 'U', 'E', 'F', 'I', as a 32 bit little endian longword
#define WRITE_RETRIES 3
#define NUM_CHECKSUMS 3 // Number of checksum algorithms we support (MD5, SHA1, SHA256)
#define FS_DEFAULT FS_FAT32
#define SINGLE_CLUSTERSIZE_DEFAULT 0x00000100
#define BADBLOCK_PATTERNS {0xaa, 0x55, 0xff, 0x00}
@ -290,6 +291,11 @@ typedef struct {
char* path;
} VHD_SAVE;
typedef struct {
DWORD_PTR read_thread;
DWORD_PTR sum_thread[NUM_CHECKSUMS];
} CHECKSUM_AFFINITY;
/*
* Structure and macros used for the extensions specification of FileDialog()
* You can use:
@ -440,6 +446,7 @@ extern LONG ValidateSignature(HWND hDlg, const char* path);
extern BOOL IsFontAvailable(const char* font_name);
extern BOOL WriteFileWithRetry(HANDLE hFile, LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite,
LPDWORD lpNumberOfBytesWritten, DWORD nNumRetries);
extern BOOL SetChecksumAffinity(CHECKSUM_AFFINITY* checksum_affinity);
DWORD WINAPI FormatThread(void* param);
DWORD WINAPI SaveImageThread(void* param);