cis-kuldeep/PyBitmessage-2021-04-27
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C PoW updates

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Catching up with Grant Olson's fork.
Reduce thread priority.
This commit is contained in:
Peter Šurda 2015-11-05 22:18:53 +01:00
parent 1cace11521
commit dfda1527b8
Signed by untrusted user: PeterSurda
GPG Key ID: 0C5F50C0B5F37D87
1 changed files with 16 additions and 5 deletions
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21
src/bitmsghash.cpp
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@ -17,6 +17,14 @@
#define HASH_SIZE 64 #define HASH_SIZE 64
#define BUFLEN 16384 #define BUFLEN 16384
#if defined(__GNUC__)
#define EXPORT __attribute__ ((__visibility__("default")))
#define UINT intptr_t
#elif defined(WIN32)
#define EXPORT __declspec(dllexport)
#define UINT unsigned int
#endif
#define ntohll(x) ( ( (uint64_t)(ntohl( (unsigned int)((x << 32) >> 32) )) << 32) | ntohl( ((unsigned int)(x >> 32)) ) ) #define ntohll(x) ( ( (uint64_t)(ntohl( (unsigned int)((x << 32) >> 32) )) << 32) | ntohl( ((unsigned int)(x >> 32)) ) )
unsigned long long max_val; unsigned long long max_val;
@ -30,7 +38,7 @@ DWORD WINAPI threadfunc(LPVOID lpParameter) {
DWORD incamt = (DWORD)lpParameter; DWORD incamt = (DWORD)lpParameter;
#else #else
void * threadfunc(void* param) { void * threadfunc(void* param) {
unsigned int incamt = (unsigned int)param; UINT incamt = (UINT)param;
#endif #endif
SHA512_CTX sha; SHA512_CTX sha;
unsigned char buf[HASH_SIZE + sizeof(uint64_t)] = { 0 }; unsigned char buf[HASH_SIZE + sizeof(uint64_t)] = { 0 };
@ -59,7 +67,7 @@ void * threadfunc(void* param) {
return NULL; return NULL;
} }
extern "C" __declspec(dllexport) unsigned long long BitmessagePOW(unsigned char * starthash, unsigned long long target) extern "C" EXPORT unsigned long long BitmessagePOW(unsigned char * starthash, unsigned long long target)
{ {
successval = 0; successval = 0;
max_val = target; max_val = target;
@ -67,14 +75,17 @@ extern "C" __declspec(dllexport) unsigned long long BitmessagePOW(unsigned char
# ifdef _WIN32 # ifdef _WIN32
HANDLE* threads = (HANDLE*)calloc(sizeof(HANDLE), numthreads); HANDLE* threads = (HANDLE*)calloc(sizeof(HANDLE), numthreads);
# else # else
pthread_t* threads = calloc(sizeof(pthread_t), numthreads); pthread_t* threads = (pthread_t*)calloc(sizeof(pthread_t), numthreads);
struct sched_param schparam;
schparam.sched_priority = 0;
# endif # endif
for (int i = 0; i < numthreads; i++) { for (UINT i = 0; i < numthreads; i++) {
# ifdef _WIN32 # ifdef _WIN32
threads[i] = CreateThread(NULL, 0, threadfunc, (LPVOID)i, 0, NULL); threads[i] = CreateThread(NULL, 0, threadfunc, (LPVOID)i, 0, NULL);
SetThreadPriority(threads[i], THREAD_PRIORITY_IDLE); SetThreadPriority(threads[i], THREAD_PRIORITY_IDLE);
# else # else
pthread_create(&threads[i], NULL, threadfunc, (void*)i); pthread_create(&threads[i], NULL, threadfunc, (void*)i);
pthread_setschedparam(threads[i], SCHED_IDLE, &schparam);
# endif # endif
} }
# ifdef _WIN32 # ifdef _WIN32
@ -86,4 +97,4 @@ extern "C" __declspec(dllexport) unsigned long long BitmessagePOW(unsigned char
# endif # endif
free(threads); free(threads);
return successval; return successval;
} }