726 lines
20 KiB
C++
726 lines
20 KiB
C++
/*
|
|
www.sourceforge.net/projects/dfhack
|
|
Copyright (c) 2009 Petr Mrázek (peterix), Kenneth Ferland (Impaler[WrG]), dorf
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any
|
|
damages arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any
|
|
purpose, including commercial applications, and to alter it and
|
|
redistribute it freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must
|
|
not claim that you wrote the original software. If you use this
|
|
software in a product, an acknowledgment in the product documentation
|
|
would be appreciated but is not required.
|
|
|
|
2. Altered source versions must be plainly marked as such, and
|
|
must not be misrepresented as being the original software.
|
|
|
|
3. This notice may not be removed or altered from any source
|
|
distribution.
|
|
*/
|
|
#include "DFCommonInternal.h"
|
|
#include "../shmserver/shms.h"
|
|
using namespace DFHack;
|
|
|
|
// a full memory barrier! better be safe than sorry.
|
|
class SHMProcess::Private
|
|
{
|
|
public:
|
|
Private()
|
|
{
|
|
my_descriptor = NULL;
|
|
my_pid = 0;
|
|
my_shm = 0;
|
|
my_window = NULL;
|
|
attached = false;
|
|
suspended = false;
|
|
identified = false;
|
|
DFSVMutex = 0;
|
|
DFCLMutex = 0;
|
|
};
|
|
~Private(){};
|
|
memory_info * my_descriptor;
|
|
DFWindow * my_window;
|
|
uint32_t my_pid;
|
|
char *my_shm;
|
|
HANDLE DFSVMutex;
|
|
HANDLE DFCLMutex;
|
|
|
|
bool attached;
|
|
bool suspended;
|
|
bool identified;
|
|
|
|
bool waitWhile (DF_PINGPONG state);
|
|
bool isValidSV();
|
|
bool DF_TestBridgeVersion(bool & ret);
|
|
bool DF_GetPID(uint32_t & ret);
|
|
};
|
|
|
|
// is the other side still there?
|
|
bool SHMProcess::Private::isValidSV()
|
|
{
|
|
// try if CL mutex is free
|
|
uint32_t result = WaitForSingleObject(DFSVMutex,0);
|
|
|
|
switch (result)
|
|
{
|
|
case WAIT_ABANDONED:
|
|
case WAIT_OBJECT_0:
|
|
{
|
|
ReleaseMutex(DFSVMutex);
|
|
return false;
|
|
}
|
|
case WAIT_TIMEOUT:
|
|
{
|
|
// mutex is held by DF
|
|
return true;
|
|
}
|
|
default:
|
|
case WAIT_FAILED:
|
|
{
|
|
// TODO: now how do I respond to this?
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool SHMProcess::Private::waitWhile (DF_PINGPONG state)
|
|
{
|
|
uint32_t cnt = 0;
|
|
SCHED_YIELD // yield the CPU, valid only on single-core CPUs
|
|
while (((shm_cmd *)my_shm)->pingpong == state)
|
|
{
|
|
if(cnt == 10000)
|
|
{
|
|
if(!isValidSV())// DF not there anymore?
|
|
{
|
|
full_barrier
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_RUNNING;
|
|
attached = suspended = false;
|
|
ReleaseMutex(DFCLMutex);
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
cnt = 0;
|
|
}
|
|
}
|
|
cnt++;
|
|
}
|
|
if(((shm_cmd *)my_shm)->pingpong == DFPP_SV_ERROR)
|
|
{
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_RUNNING;
|
|
attached = suspended = false;
|
|
cerr << "shm server error!" << endl;
|
|
assert (false);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool SHMProcess::Private::DF_TestBridgeVersion(bool & ret)
|
|
{
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_VERSION;
|
|
full_barrier
|
|
if(!waitWhile(DFPP_VERSION))
|
|
return false;
|
|
full_barrier
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_SUSPENDED;
|
|
ret =( ((shm_retval *)my_shm)->value == PINGPONG_VERSION );
|
|
return true;
|
|
}
|
|
|
|
bool SHMProcess::Private::DF_GetPID(uint32_t & ret)
|
|
{
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_PID;
|
|
full_barrier
|
|
if(!waitWhile(DFPP_PID))
|
|
return false;
|
|
full_barrier
|
|
((shm_cmd *)my_shm)->pingpong = DFPP_SUSPENDED;
|
|
ret = ((shm_retval *)my_shm)->value;
|
|
return true;
|
|
}
|
|
|
|
SHMProcess::SHMProcess(vector <memory_info> & known_versions)
|
|
: d(new Private())
|
|
{
|
|
char exe_link_name [256];
|
|
char target_name[1024];
|
|
int target_result;
|
|
// get server and client mutex
|
|
d->DFSVMutex = OpenMutex(SYNCHRONIZE,false, "DFSVMutex");
|
|
if(d->DFSVMutex == 0)
|
|
{
|
|
return;
|
|
}
|
|
d->DFCLMutex = OpenMutex(SYNCHRONIZE,false, "DFCLMutex");
|
|
if(d->DFCLMutex == 0)
|
|
{
|
|
return;
|
|
}
|
|
if(!attach())
|
|
{
|
|
return;
|
|
}
|
|
|
|
// All seems to be OK so far. Attached and connected to something that looks like DF
|
|
|
|
// Test bridge version, will also detect when we connect to something that doesn't respond
|
|
bool bridgeOK;
|
|
if(!d->DF_TestBridgeVersion(bridgeOK))
|
|
{
|
|
fprintf(stderr,"DF terminated during reading\n");
|
|
UnmapViewOfFile(d->my_shm);
|
|
ReleaseMutex(d->DFCLMutex);
|
|
CloseHandle(d->DFSVMutex);
|
|
d->DFSVMutex = 0;
|
|
CloseHandle(d->DFCLMutex);
|
|
d->DFCLMutex = 0;
|
|
return;
|
|
}
|
|
if(!bridgeOK)
|
|
{
|
|
fprintf(stderr,"SHM bridge version mismatch\n");
|
|
((shm_cmd *)d->my_shm)->pingpong = DFPP_RUNNING;
|
|
UnmapViewOfFile(d->my_shm);
|
|
ReleaseMutex(d->DFCLMutex);
|
|
CloseHandle(d->DFSVMutex);
|
|
d->DFSVMutex = 0;
|
|
CloseHandle(d->DFCLMutex);
|
|
d->DFCLMutex = 0;
|
|
return;
|
|
}
|
|
/*
|
|
* get the PID from DF
|
|
*/
|
|
if(d->DF_GetPID(d->my_pid))
|
|
{
|
|
// try to identify the DF version
|
|
do // glorified goto
|
|
{
|
|
IMAGE_NT_HEADERS32 pe_header;
|
|
IMAGE_SECTION_HEADER sections[16];
|
|
HMODULE hmod = NULL;
|
|
DWORD junk;
|
|
HANDLE hProcess;
|
|
bool found = false;
|
|
d->identified = false;
|
|
// open process, we only need the process open
|
|
hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, d->my_pid );
|
|
if (NULL == hProcess)
|
|
break;
|
|
|
|
// try getting the first module of the process
|
|
if(EnumProcessModules(hProcess, &hmod, 1 * sizeof(HMODULE), &junk) == 0)
|
|
{
|
|
CloseHandle(hProcess);
|
|
cout << "EnumProcessModules fail'd" << endl;
|
|
break;
|
|
}
|
|
// got base ;)
|
|
uint32_t base = (uint32_t)hmod;
|
|
|
|
// read from this process
|
|
uint32_t pe_offset = readDWord(base+0x3C);
|
|
read(base + pe_offset , sizeof(pe_header), (uint8_t *)&pe_header);
|
|
read(base + pe_offset+ sizeof(pe_header), sizeof(sections) , (uint8_t *)§ions );
|
|
|
|
// iterate over the list of memory locations
|
|
vector<memory_info>::iterator it;
|
|
for ( it=known_versions.begin() ; it < known_versions.end(); it++ )
|
|
{
|
|
uint32_t pe_timestamp = (*it).getHexValue("pe_timestamp");
|
|
if (pe_timestamp == pe_header.FileHeader.TimeDateStamp)
|
|
{
|
|
memory_info *m = new memory_info(*it);
|
|
m->RebaseAll(base);
|
|
d->my_descriptor = m;
|
|
d->identified = true;
|
|
cerr << "identified " << m->getVersion() << endl;
|
|
break;
|
|
}
|
|
}
|
|
CloseHandle(hProcess);
|
|
} while (0); // glorified goto end
|
|
|
|
if(d->identified)
|
|
{
|
|
d->my_window = new DFWindow(this);
|
|
}
|
|
else
|
|
{
|
|
((shm_cmd *)d->my_shm)->pingpong = DFPP_RUNNING;
|
|
UnmapViewOfFile(d->my_shm);
|
|
d->my_shm = 0;
|
|
ReleaseMutex(d->DFCLMutex);
|
|
CloseHandle(d->DFSVMutex);
|
|
d->DFSVMutex = 0;
|
|
CloseHandle(d->DFCLMutex);
|
|
d->DFCLMutex = 0;
|
|
return;
|
|
}
|
|
}
|
|
full_barrier
|
|
// at this point, DF is attached and suspended, make it run
|
|
detach();
|
|
}
|
|
|
|
bool SHMProcess::isSuspended()
|
|
{
|
|
return d->suspended;
|
|
}
|
|
bool SHMProcess::isAttached()
|
|
{
|
|
return d->attached;
|
|
}
|
|
|
|
bool SHMProcess::isIdentified()
|
|
{
|
|
return d->identified;
|
|
}
|
|
|
|
SHMProcess::~SHMProcess()
|
|
{
|
|
if(d->attached)
|
|
{
|
|
detach();
|
|
}
|
|
// destroy data model. this is assigned by processmanager
|
|
if(d->my_descriptor)
|
|
{
|
|
delete d->my_descriptor;
|
|
}
|
|
if(d->my_window)
|
|
{
|
|
delete d->my_window;
|
|
}
|
|
// release mutex handles we have
|
|
if(d->DFCLMutex)
|
|
{
|
|
CloseHandle(d->DFCLMutex);
|
|
}
|
|
if(d->DFSVMutex)
|
|
{
|
|
CloseHandle(d->DFSVMutex);
|
|
}
|
|
delete d;
|
|
}
|
|
|
|
memory_info * SHMProcess::getDescriptor()
|
|
{
|
|
return d->my_descriptor;
|
|
}
|
|
|
|
DFWindow * SHMProcess::getWindow()
|
|
{
|
|
return d->my_window;
|
|
}
|
|
|
|
int SHMProcess::getPID()
|
|
{
|
|
return d->my_pid;
|
|
}
|
|
|
|
//FIXME: implement
|
|
bool SHMProcess::getThreadIDs(vector<uint32_t> & threads )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
//FIXME: cross-reference with ELF segment entries?
|
|
void SHMProcess::getMemRanges( vector<t_memrange> & ranges )
|
|
{
|
|
char buffer[1024];
|
|
char permissions[5]; // r/-, w/-, x/-, p/s, 0
|
|
|
|
sprintf(buffer, "/proc/%lu/maps", d->my_pid);
|
|
FILE *mapFile = ::fopen(buffer, "r");
|
|
uint64_t offset, device1, device2, node;
|
|
|
|
while (fgets(buffer, 1024, mapFile))
|
|
{
|
|
t_memrange temp;
|
|
temp.name[0] = 0;
|
|
sscanf(buffer, "%llx-%llx %s %llx %2llu:%2llu %llu %s",
|
|
&temp.start,
|
|
&temp.end,
|
|
(char*)&permissions,
|
|
&offset, &device1, &device2, &node,
|
|
(char*)&temp.name);
|
|
temp.read = permissions[0] == 'r';
|
|
temp.write = permissions[1] == 'w';
|
|
temp.execute = permissions[2] == 'x';
|
|
ranges.push_back(temp);
|
|
}
|
|
}
|
|
|
|
bool SHMProcess::suspend()
|
|
{
|
|
if(!d->attached)
|
|
{
|
|
cerr << "couldn't suspend, not attached" << endl;
|
|
return false;
|
|
}
|
|
if(d->suspended)
|
|
{
|
|
cerr << "couldn't suspend, already suspended" << endl;
|
|
return true;
|
|
}
|
|
((shm_cmd *)d->my_shm)->pingpong = DFPP_SUSPEND;
|
|
if(!d->waitWhile(DFPP_SUSPEND))
|
|
{
|
|
cerr << "couldn't suspend, DF not responding to commands" << endl;
|
|
return false;
|
|
}
|
|
d->suspended = true;
|
|
return true;
|
|
}
|
|
|
|
bool SHMProcess::asyncSuspend()
|
|
{
|
|
if(!d->attached)
|
|
{
|
|
return false;
|
|
}
|
|
if(d->suspended)
|
|
{
|
|
return true;
|
|
}
|
|
if(((shm_cmd *)d->my_shm)->pingpong == DFPP_SUSPENDED)
|
|
{
|
|
d->suspended = true;
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
((shm_cmd *)d->my_shm)->pingpong = DFPP_SUSPEND;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool SHMProcess::forceresume()
|
|
{
|
|
return resume();
|
|
}
|
|
|
|
bool SHMProcess::resume()
|
|
{
|
|
if(!d->attached)
|
|
{
|
|
cerr << "couldn't resume because of no attachment" << endl;
|
|
return false;
|
|
}
|
|
if(!d->suspended)
|
|
{
|
|
cerr << "couldn't resume because of not being suspended" << endl;
|
|
return true;
|
|
}
|
|
((shm_cmd *)d->my_shm)->pingpong = DFPP_RUNNING;
|
|
d->suspended = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
bool SHMProcess::attach()
|
|
{
|
|
int status;
|
|
if(g_pProcess != 0)
|
|
{
|
|
cerr << "there's already a different process attached" << endl;
|
|
return false;
|
|
}
|
|
if(d->attached)
|
|
{
|
|
cerr << "already attached" << endl;
|
|
return false;
|
|
}
|
|
// check if DF is there
|
|
if(!d->isValidSV())
|
|
{
|
|
return false; // NOT
|
|
}
|
|
// try locking client mutex
|
|
uint32_t result = WaitForSingleObject(d->DFCLMutex,0);
|
|
if( result != WAIT_OBJECT_0 && result != WAIT_ABANDONED)
|
|
{
|
|
return false; // we couldn't lock it
|
|
}
|
|
|
|
// now try getting and attaching the shared memory
|
|
HANDLE shmHandle = OpenFileMapping(FILE_MAP_ALL_ACCESS,false,"DFShm");
|
|
if(!shmHandle)
|
|
{
|
|
ReleaseMutex(d->DFCLMutex);
|
|
return false; // we couldn't lock it
|
|
}
|
|
|
|
// attempt to attach the opened mapping
|
|
d->my_shm = (char *) MapViewOfFile(shmHandle,FILE_MAP_ALL_ACCESS, 0,0, SHM_SIZE);
|
|
if(!d->my_shm)
|
|
{
|
|
CloseHandle(shmHandle);
|
|
ReleaseMutex(d->DFCLMutex);
|
|
return false; // we couldn't attach the mapping
|
|
}
|
|
// we close the handle right here so we don't have to keep track of it
|
|
CloseHandle(shmHandle);
|
|
d->attached = true;
|
|
suspend();
|
|
g_pProcess = this;
|
|
return true;
|
|
}
|
|
|
|
bool SHMProcess::detach()
|
|
{
|
|
if(!d->attached)
|
|
{
|
|
return false;
|
|
}
|
|
if(d->suspended)
|
|
{
|
|
resume();
|
|
}
|
|
// detach segment
|
|
UnmapViewOfFile(d->my_shm);
|
|
// release it for some other client
|
|
ReleaseMutex(d->DFCLMutex); // we keep the mutex handles
|
|
d->attached = false;
|
|
d->suspended = false;
|
|
g_pProcess = 0;
|
|
return true;
|
|
}
|
|
|
|
void SHMProcess::read (uint32_t src_address, uint32_t size, uint8_t *target_buffer)
|
|
{
|
|
// normal read under 1MB
|
|
if(size <= SHM_BODY)
|
|
{
|
|
((shm_read *)d->my_shm)->address = src_address;
|
|
((shm_read *)d->my_shm)->length = size;
|
|
full_barrier
|
|
((shm_read *)d->my_shm)->pingpong = DFPP_READ;
|
|
d->waitWhile(DFPP_READ);
|
|
memcpy (target_buffer, d->my_shm + SHM_HEADER,size);
|
|
}
|
|
// a big read, we pull data over the shm in iterations
|
|
else
|
|
{
|
|
// first read equals the size of the SHM window
|
|
uint32_t to_read = SHM_BODY;
|
|
while (size)
|
|
{
|
|
// read to_read bytes from src_cursor
|
|
((shm_read *)d->my_shm)->address = src_address;
|
|
((shm_read *)d->my_shm)->length = to_read;
|
|
full_barrier
|
|
((shm_read *)d->my_shm)->pingpong = DFPP_READ;
|
|
d->waitWhile(DFPP_READ);
|
|
memcpy (target_buffer, d->my_shm + SHM_HEADER,size);
|
|
// decrease size by bytes read
|
|
size -= to_read;
|
|
// move the cursors
|
|
src_address += to_read;
|
|
target_buffer += to_read;
|
|
// check how much to write in the next iteration
|
|
to_read = min(size, (uint32_t) SHM_BODY);
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t SHMProcess::readByte (const uint32_t offset)
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_BYTE;
|
|
d->waitWhile(DFPP_READ_BYTE);
|
|
return ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
|
|
void SHMProcess::readByte (const uint32_t offset, uint8_t &val )
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_BYTE;
|
|
d->waitWhile(DFPP_READ_BYTE);
|
|
val = ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
|
|
uint16_t SHMProcess::readWord (const uint32_t offset)
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_WORD;
|
|
d->waitWhile(DFPP_READ_WORD);
|
|
return ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
|
|
void SHMProcess::readWord (const uint32_t offset, uint16_t &val)
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_WORD;
|
|
d->waitWhile(DFPP_READ_WORD);
|
|
val = ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
|
|
uint32_t SHMProcess::readDWord (const uint32_t offset)
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_DWORD;
|
|
d->waitWhile(DFPP_READ_DWORD);
|
|
return ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
void SHMProcess::readDWord (const uint32_t offset, uint32_t &val)
|
|
{
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_DWORD;
|
|
d->waitWhile(DFPP_READ_DWORD);
|
|
val = ((shm_retval *)d->my_shm)->value;
|
|
}
|
|
|
|
/*
|
|
* WRITING
|
|
*/
|
|
|
|
void SHMProcess::writeDWord (uint32_t offset, uint32_t data)
|
|
{
|
|
((shm_write_small *)d->my_shm)->address = offset;
|
|
((shm_write_small *)d->my_shm)->value = data;
|
|
full_barrier
|
|
((shm_write_small *)d->my_shm)->pingpong = DFPP_WRITE_DWORD;
|
|
d->waitWhile(DFPP_WRITE_DWORD);
|
|
}
|
|
|
|
// using these is expensive.
|
|
void SHMProcess::writeWord (uint32_t offset, uint16_t data)
|
|
{
|
|
((shm_write_small *)d->my_shm)->address = offset;
|
|
((shm_write_small *)d->my_shm)->value = data;
|
|
full_barrier
|
|
((shm_write_small *)d->my_shm)->pingpong = DFPP_WRITE_WORD;
|
|
d->waitWhile(DFPP_WRITE_WORD);
|
|
}
|
|
|
|
void SHMProcess::writeByte (uint32_t offset, uint8_t data)
|
|
{
|
|
((shm_write_small *)d->my_shm)->address = offset;
|
|
((shm_write_small *)d->my_shm)->value = data;
|
|
full_barrier
|
|
((shm_write_small *)d->my_shm)->pingpong = DFPP_WRITE_BYTE;
|
|
d->waitWhile(DFPP_WRITE_BYTE);
|
|
}
|
|
|
|
void SHMProcess::write (uint32_t dst_address, uint32_t size, uint8_t *source_buffer)
|
|
{
|
|
// normal write under 1MB
|
|
if(size <= SHM_BODY)
|
|
{
|
|
((shm_write *)d->my_shm)->address = dst_address;
|
|
((shm_write *)d->my_shm)->length = size;
|
|
memcpy(d->my_shm+SHM_HEADER,source_buffer, size);
|
|
full_barrier
|
|
((shm_write *)d->my_shm)->pingpong = DFPP_WRITE;
|
|
d->waitWhile(DFPP_WRITE);
|
|
}
|
|
// a big write, we push this over the shm in iterations
|
|
else
|
|
{
|
|
// first write equals the size of the SHM window
|
|
uint32_t to_write = SHM_BODY;
|
|
while (size)
|
|
{
|
|
// write to_write bytes to dst_cursor
|
|
((shm_write *)d->my_shm)->address = dst_address;
|
|
((shm_write *)d->my_shm)->length = to_write;
|
|
memcpy(d->my_shm+SHM_HEADER,source_buffer, to_write);
|
|
full_barrier
|
|
((shm_write *)d->my_shm)->pingpong = DFPP_WRITE;
|
|
d->waitWhile(DFPP_WRITE);
|
|
// decrease size by bytes written
|
|
size -= to_write;
|
|
// move the cursors
|
|
source_buffer += to_write;
|
|
dst_address += to_write;
|
|
// check how much to write in the next iteration
|
|
to_write = min(size, (uint32_t) SHM_BODY);
|
|
}
|
|
}
|
|
}
|
|
|
|
// FIXME: butt-fugly
|
|
const std::string SHMProcess::readCString (uint32_t offset)
|
|
{
|
|
std::string temp;
|
|
char temp_c[256];
|
|
int counter = 0;
|
|
char r;
|
|
do
|
|
{
|
|
r = readByte(offset+counter);
|
|
temp_c[counter] = r;
|
|
counter++;
|
|
} while (r && counter < 255);
|
|
temp_c[counter] = 0;
|
|
temp = temp_c;
|
|
return temp;
|
|
}
|
|
|
|
DfVector SHMProcess::readVector (uint32_t offset, uint32_t item_size)
|
|
{
|
|
/*
|
|
MSVC++ vector is four pointers long
|
|
ptr allocator
|
|
ptr start
|
|
ptr end
|
|
ptr alloc_end
|
|
|
|
we don't care about alloc_end because we don't try to add stuff
|
|
we also don't care about the allocator thing in front
|
|
*/
|
|
uint32_t start = g_pProcess->readDWord(offset+4);
|
|
uint32_t end = g_pProcess->readDWord(offset+8);
|
|
uint32_t size = (end - start) /4;
|
|
return DfVector(start,size,item_size);
|
|
}
|
|
|
|
const std::string SHMProcess::readSTLString(uint32_t offset)
|
|
{
|
|
//offset -= 4; //msvc std::string pointers are 8 bytes ahead of their data, not 4
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_STL_STRING;
|
|
d->waitWhile(DFPP_READ_STL_STRING);
|
|
int length = ((shm_retval *)d->my_shm)->value;
|
|
// char temp_c[256];
|
|
// strncpy(temp_c, d->my_shm+SHM_HEADER,length+1); // length + 1 for the null terminator
|
|
return(string(d->my_shm+SHM_HEADER));
|
|
}
|
|
|
|
size_t SHMProcess::readSTLString (uint32_t offset, char * buffer, size_t bufcapacity)
|
|
{
|
|
//offset -= 4; //msvc std::string pointers are 8 bytes ahead of their data, not 4
|
|
((shm_read_small *)d->my_shm)->address = offset;
|
|
full_barrier
|
|
((shm_read_small *)d->my_shm)->pingpong = DFPP_READ_STL_STRING;
|
|
d->waitWhile(DFPP_READ_STL_STRING);
|
|
size_t length = ((shm_retval *)d->my_shm)->value;
|
|
size_t real = min(length, bufcapacity - 1);
|
|
strncpy(buffer, d->my_shm+SHM_HEADER,real); // length + 1 for the null terminator
|
|
buffer[real] = 0;
|
|
return real;
|
|
}
|
|
|
|
void SHMProcess::writeSTLString(const uint32_t address, const std::string writeString)
|
|
{
|
|
((shm_write_small *)d->my_shm)->address = address/*-4*/;
|
|
strncpy(d->my_shm+SHM_HEADER,writeString.c_str(),writeString.length()+1); // length + 1 for the null terminator
|
|
full_barrier
|
|
((shm_write_small *)d->my_shm)->pingpong = DFPP_WRITE_STL_STRING;
|
|
d->waitWhile(DFPP_WRITE_STL_STRING);
|
|
} |