28 windows_28_windows_heap 堆

windows_28_windows_heap 堆

1. // windows_28_windows_heap.cpp : 定义控制台应用程序的入口点。
2. //
4. #include "stdafx.h"
5. #include <windows.h>
6. #include <stdlib.h>
8. void HeapInfo( )
9. {
10. //默认堆句柄
11. HANDLE hHeap = GetProcessHeap( );
12. printf( "Default Heap:%p\n", hHeap );
13. //所有堆的句柄
14. HANDLE hHeaps[256] = { 0 };
15. DWORD nCount = GetProcessHeaps( 256, hHeaps );
16. printf( "All Heap:%d\n", nCount );
17. for (DWORD nIndex = 0; nIndex < nCount; nIndex++)
18. {
19. printf( "\t%d: %p\n", nIndex + 1, hHeaps[nIndex] );
20. }
21. }
22. void Heap( )
23. {
25. HeapInfo( );//堆测试
26. //1、创建堆
27. //HeapCreate
28. HANDLE hHeap = HeapCreate( HEAP_GENERATE_EXCEPTIONS, 1024 * 1024, 0 );
29. HeapInfo( ); //堆测试
30. //2、分配内存
31. //HeapAlloc
32. CHAR *pszBuf = (CHAR*)HeapAlloc( hHeap, HEAP_ZERO_MEMORY, 100 );
33. //3、使用内存
34. printf( "HeapCreate:%p\n", hHeap );
35. printf( "HeapCreateBuf:%p\n", pszBuf );
36. //strcpy_s( pszBuf, ( rsize_t)strlen( "hello Heap\n" ), "hello Heap\n" );
37. //printf( "%s", pszBuf );
38. //4、释放内存
39. //HeapFree
40. HeapFree( hHeap, 0, pszBuf );
41. //5、释放堆
42. //HeapDestroy
43. HeapDestroy( hHeap );
44. HeapInfo( );//堆测试
45. }
46. int _tmain(int argc, _TCHAR* argv[])
47. {
48. //调试看代码
49. CHAR *pszBuf = (CHAR*)malloc( 100 );
51. Heap( );
52. return 0;
53. }

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转载于:https://www.cnblogs.com/nfking/p/5573500.html