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#ifndef _UTIL_H_
#define _UTIL_H_ 1
#include <pthread.h>
#include <errno.h>
#include <openssl/sha.h>
#include "uint256.h"
#define loop for (;;)
#define BEGIN(a) ((char*)&(a))
#define END(a) ((char*)&((&(a))[1]))
#define UBEGIN(a) ((unsigned char*)&(a))
#define UEND(a) ((unsigned char*)&((&(a))[1]))
#define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
#define WSAGetLastError() errno
#define WSAEINVAL EINVAL
#define WSAEALREADY EALREADY
#define WSAEWOULDBLOCK EWOULDBLOCK
#define WSAEMSGSIZE EMSGSIZE
#define WSAEINTR EINTR
#define WSAEINPROGRESS EINPROGRESS
#define WSAEADDRINUSE EADDRINUSE
#define WSAENOTSOCK EBADF
#define INVALID_SOCKET (SOCKET)(~0)
#define SOCKET_ERROR -1
inline int myclosesocket(SOCKET& hSocket)
{
if (hSocket == INVALID_SOCKET)
return WSAENOTSOCK;
#ifdef WIN32
int ret = closesocket(hSocket);
#else
int ret = close(hSocket);
#endif
hSocket = INVALID_SOCKET;
return ret;
}
#define closesocket(s) myclosesocket(s)
// Wrapper to automatically initialize mutex
class CCriticalSection
{
protected:
pthread_rwlock_t mutex;
public:
explicit CCriticalSection() { pthread_rwlock_init(&mutex, NULL); }
~CCriticalSection() { pthread_rwlock_destroy(&mutex); }
void Enter(bool fShared = false) {
if (fShared) {
pthread_rwlock_rdlock(&mutex);
} else {
pthread_rwlock_wrlock(&mutex);
}
}
void Leave() { pthread_rwlock_unlock(&mutex); }
};
// Automatically leave critical section when leaving block, needed for exception safety
class CCriticalBlock
{
protected:
CCriticalSection* pcs;
public:
CCriticalBlock(CCriticalSection& cs, bool fShared = false) : pcs(&cs) { pcs->Enter(fShared); }
operator bool() const { return true; }
~CCriticalBlock() { pcs->Leave(); }
};
#define CRITICAL_BLOCK(cs) \
if (CCriticalBlock criticalblock = CCriticalBlock(cs))
#define SHARED_CRITICAL_BLOCK(cs) \
if (CCriticalBlock criticalblock = CCriticalBlock(cs, true))
template<typename T1> inline uint256 Hash(const T1 pbegin, const T1 pend)
{
static unsigned char pblank[1];
uint256 hash1;
SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
uint256 hash2;
SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
return hash2;
}
void static inline Sleep(int nMilliSec) {
struct timespec wa;
wa.tv_sec = nMilliSec/1000;
wa.tv_nsec = (nMilliSec % 1000) * 1000000;
nanosleep(&wa, NULL);
}
#endif