boostorg/regex
1
0
Fork 1
mirror of https://github.com/boostorg/regex.git synced 2025-07-25 01:57:14 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merged regex-4 branch.

Browse Source 
[SVN r18430]
This commit is contained in:
John Maddock
2003-05-17 11:45:48 +00:00
parent a81a1ea30f
commit f0f32bdda1
154 changed files with 32893 additions and 432 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
src/regex.cpp
View File

@ -23,12 +23,16 @@
#define BOOST_REGEX_SOURCE
#include <new>
#include <boost/regex.hpp>
#include <boost/throw_exception.hpp>
#if defined(BOOST_REGEX_HAS_MS_STACK_GUARD) && defined(_MSC_VER) && (_MSC_VER >= 1300)
# include <malloc.h>
#endif
namespace boost{
//
// fix: these are declared out of line here to ensure
// that dll builds contain the Virtual table for these
@ -43,6 +47,71 @@ regbase::regbase()
regbase::regbase(const regbase& b)
: _flags(b._flags){}
namespace re_detail{
#ifdef BOOST_REGEX_HAS_MS_STACK_GUARD
BOOST_REGEX_DECL void BOOST_REGEX_CALL reset_stack_guard_page()
{
#if defined(BOOST_REGEX_HAS_MS_STACK_GUARD) && defined(_MSC_VER) && (_MSC_VER >= 1300)
_resetstkoflw();
#else
//
// We need to locate the current page being used by the stack,
// move to the page below it and then deallocate and protect
// that page. Note that ideally we would protect only the lowest
// stack page that has been allocated: in practice there
// seems to be no easy way to locate this page, in any case as
// long as the next page is protected, then Windows will figure
// the rest out for us...
//
SYSTEM_INFO si;
GetSystemInfo(&si);
MEMORY_BASIC_INFORMATION mi;
DWORD previous_protection_status;
//
// this is an address in our stack space:
//
LPBYTE page = (LPBYTE)&page;
//
// Get the current memory page in use:
//
VirtualQuery(page, &mi, sizeof(mi));
//
// Go to the page one below this:
//
page = (LPBYTE)(mi.BaseAddress)-si.dwPageSize;
//
// Free and protect everything from the start of the
// allocation range, to the end of the page below the
// one in use:
//
if (!VirtualFree(mi.AllocationBase, (LPBYTE)page - (LPBYTE)mi.AllocationBase, MEM_DECOMMIT)
|| !VirtualProtect(page, si.dwPageSize, PAGE_GUARD | PAGE_READWRITE, &previous_protection_status))
{
throw std::bad_exception();
}
#endif
}
#endif
BOOST_REGEX_DECL void BOOST_REGEX_CALL raise_regex_exception(const std::string& msg)
{
bad_expression e(msg);
throw_exception(e);
}
#if defined(BOOST_REGEX_NON_RECURSIVE) && !defined(BOOST_REGEX_V3)
mem_block_cache block_cache = { 0, };
#endif
} // namespace re_detail
} // namespace boost
#if defined(BOOST_RE_USE_VCL) && defined(BOOST_REGEX_BUILD_DLL)
@ -58,3 +127,4 @@ int WINAPI DllEntryPoint(HINSTANCE , unsigned long , void*)