Mercurial > projects > ldc
view lphobos/gc/win32.d @ 1112:829ac3f30103
Updating revisions.pl.in:
- Change the way the LLVM SVN revision is detected, using `svn info` instead
of `svnversion`. This speeds it up significantly on my machine (especially
when the LLVM SVN checkout isn't in disk cache).
- Add "last changed date" to SVN checkouts too, not just unpacked tarballs
- No longer rely on SVN revision to detect release vs trunk checkouts, treat
release checkout the same as unpacked release tarball. (Except for date
determination, which uses SVN date instead of filesystem date)
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Fri, 13 Mar 2009 16:18:01 +0100 |
parents | 373489eeaf90 |
children |
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// Copyright (C) 2001-2002 by Digital Mars // All Rights Reserved // www.digitalmars.com // Written by Walter Bright import std.c.windows.windows; alias int pthread_t; /*********************************** * Map memory. */ void *os_mem_map(uint nbytes) { return VirtualAlloc(null, nbytes, MEM_RESERVE, PAGE_READWRITE); } /*********************************** * Commit memory. * Returns: * 0 success * !=0 failure */ int os_mem_commit(void *base, uint offset, uint nbytes) { void *p; p = VirtualAlloc(base + offset, nbytes, MEM_COMMIT, PAGE_READWRITE); return cast(int)(p == null); } /*********************************** * Decommit memory. * Returns: * 0 success * !=0 failure */ int os_mem_decommit(void *base, uint offset, uint nbytes) { return cast(int)VirtualFree(base + offset, nbytes, MEM_DECOMMIT) == 0; } /*********************************** * Unmap memory allocated with os_mem_map(). * Memory must have already been decommitted. * Returns: * 0 success * !=0 failure */ int os_mem_unmap(void *base, uint nbytes) { return cast(int)VirtualFree(base, 0, MEM_RELEASE) == 0; } /******************************************** */ pthread_t pthread_self() { //printf("pthread_self() = %x\n", GetCurrentThreadId()); return cast(pthread_t) GetCurrentThreadId(); } /********************************************** * Determine "bottom" of stack (actually the top on Win32 systems). */ void *os_query_stackBottom() { asm { naked ; mov EAX,FS:4 ; ret ; } } /********************************************** * Determine base address and size of static data segment. */ version (GNU) { // This is MinGW specific extern (C) { // TODO: skip the .rdata between .data and .bss? extern int _data_start__; extern int _bss_end__; } void os_query_staticdataseg(void **base, uint *nbytes) { *base = cast(void *)&_data_start__; *nbytes = cast(uint)(cast(char *)&_bss_end__ - cast(char *)&_data_start__); } } else { extern (C) { extern int _xi_a; // &_xi_a just happens to be start of data segment extern int _edata; // &_edata is start of BSS segment extern int _end; // &_end is past end of BSS } void os_query_staticdataseg(void **base, uint *nbytes) { *base = cast(void *)&_xi_a; *nbytes = cast(uint)(cast(char *)&_end - cast(char *)&_xi_a); } } /++++ void os_query_staticdataseg(void **base, uint *nbytes) { static char dummy = 6; SYSTEM_INFO si; MEMORY_BASIC_INFORMATION mbi; char *p; void *bottom = null; uint size = 0; // Tests show the following does not work reliably. // The reason is that the data segment is arbitrarily divided // up into PAGE_READWRITE and PAGE_WRITECOPY. // This means there are multiple regions to query, and // can even wind up including the code segment. assert(0); // fix implementation GetSystemInfo(&si); p = (char *)((uint)(&dummy) & ~(si.dwPageSize - 1)); while (VirtualQuery(p, &mbi, sizeof(mbi)) == sizeof(mbi) && mbi.Protect & (PAGE_READWRITE | PAGE_WRITECOPY) && !(mbi.Protect & PAGE_GUARD) && mbi.AllocationBase != 0) { bottom = (void *)mbi.BaseAddress; size = (uint)mbi.RegionSize; printf("dwPageSize = x%x\n", si.dwPageSize); printf("&dummy = %p\n", &dummy); printf("BaseAddress = %p\n", mbi.BaseAddress); printf("AllocationBase = %p\n", mbi.AllocationBase); printf("AllocationProtect = x%x\n", mbi.AllocationProtect); printf("RegionSize = x%x\n", mbi.RegionSize); printf("State = x%x\n", mbi.State); printf("Protect = x%x\n", mbi.Protect); printf("Type = x%x\n\n", mbi.Type); p -= si.dwPageSize; } *base = bottom; *nbytes = size; } ++++/