如何在Windows和Linux下获取当前线程的ID号

Linux下获取当前线程ID号函数：
pthread_t pthread_self();
返回：当前线程的ID号
pthread_t 数据类型的定义如下：
typedef unsigned long int pthread_t;
sizeof(pthread_t) = 4，4个字节的整数。

Windows下获取当前线程ID号的函数：
DWORD GetCurrentThreadId();
返回值：当前线程的ID号
DWORD数据类型定义：
typedef unsigned long DWORD;

在Windows下pthread-win库的pthread_t定义如下：
typedef struct {
void * p; /*Pointer to actual object */
unsigned int x; /*Extra information - reuse count etc */
} ptw32_handle_t;
typedef ptw32_handle_t pthread_t;
与Linux的thread_t不一样，它是一个结构，不是一个整数值

在Windows和Linux下可用的获取线程ID号的内联函数如下：
#ifdef WIN32
#include
#else
#include
#endif
inline unsigned int PthreadSelf()
{
#ifdef WIN32
return::GetCurrentThreadId();
#else
returnthread_self();
#endif
}

printf("Thread id: %lu (0x%X) pData->threadID: %I64d pData->threadNumber: %d\n", *(unsigned long *)myid.p,
myid, pData->threadID, pData->threadNumber);
从创建线程的追踪来看，这样转换后，pData->threadNumber刚好对应myid.p的unsigned long数值，其实在Windows上的实现，他就是简单的为创建的线程编号为1，2，3，从1开始。
Thread id of umt_hdb_find: 7 (0x8BBFF760) pData->threadID: 12452 pData->threadNumber: 6
Thread id of umt_hdb_find: 4 (0x8B8FF850) pData->threadID: 12308 pData->threadNumber: 3
Thread id of umt_hdb_find: 9 (0x8BDFF600) pData->threadID: 11400 pData->threadNumber: 8
Thread id of umt_hdb_find: 6 (0x8BAFFAB0) pData->threadID: 12352 pData->threadNumber: 5
Thread id of umt_hdb_find: 8 (0x8BCFFC00) pData->threadID: 828 pData->threadNumber: 7
Thread id of umt_hdb_find: 10 (0x8BEFF820) pData->threadID: 1352 pData->threadNumber: 9
Thread id of umt_hdb_find: 1 (0x8B5FF7E0) pData->threadID: 4092 pData->threadNumber: 0
Thread id of umt_hdb_find: 2 (0x8B6FFCF0) pData->threadID: 11228 pData->threadNumber: 1
Thread id of umt_hdb_find: 5 (0x8B9FF800) pData->threadID: 1484 pData->threadNumber: 4
Thread id of umt_hdb_find: 3 (0x8B7FF860) pData->threadID: 7248 pData->threadNumber: 2
Thread id of umt_hdb_find: 7 (0x8BBFF760) pData->threadID: 12452 pData->threadNumber: 6
Thread id of umt_hdb_find: 4 (0x8B8FF850) pData->threadID: 12308 pData->threadNumber: 3
Thread id of umt_hdb_find: 9 (0x8BDFF600) pData->threadID: 11400 pData->threadNumber: 8
Thread id of umt_hdb_find: 6 (0x8BAFFAB0) pData->threadID: 12352 pData->threadNumber: 5
Thread id of umt_hdb_find: 8 (0x8BCFFC00) pData->threadID: 828 pData->threadNumber: 7
Thread id of umt_hdb_find: 10 (0x8BEFF820) pData->threadID: 1352 pData->threadNumber: 9
Thread id of umt_hdb_find: 1 (0x8B5FF7E0) pData->threadID: 4092 pData->threadNumber: 0
Thread id of umt_hdb_find: 2 (0x8B6FFCF0) pData->threadID: 11228 pData->threadNumber: 1
Thread id of umt_hdb_find: 5 (0x8B9FF800) pData->threadID: 1484 pData->threadNumber: 4
Thread id of umt_hdb_find: 3 (0x8B7FF860) pData->threadID: 7248 pData->threadNumber: 2
Thread id of umt_hdb_find: 7 (0x8BBFF760) pData->threadID: 12452 pData->threadNumber: 6
Thread id of umt_hdb_find: 4 (0x8B8FF850) pData->threadID: 12308 pData->threadNumber: 3
Thread id of umt_hdb_find: 9 (0x8BDFF600) pData->threadID: 11400 pData->threadNumber: 8
Thread id of umt_hdb_find: 6 (0x8BAFFAB0) pData->threadID: 12352 pData->threadNumber: 5
Thread id of umt_hdb_find: 8 (0x8BCFFC00) pData->threadID: 828 pData->threadNumber: 7
Thread id of umt_hdb_find: 10 (0x8BEFF820) pData->threadID: 1352 pData->threadNumber: 9
这个没有多神秘，不过，与Windows系统分配的真实线程ID是不一样的。那就是一个序号而已。