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// -*- C++ -*-
// $Id$
// File: Obj_Module.cpp
// Author: Phil Mesnier
// This file contains the implementation of the classes responsible for
// managing the contents of a single object module (.o file).
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_unistd.h"
#include "ace/Process.h"
#include "ace/Pipe.h"
#include "ace/Message_Block.h"
#include "ace/Log_Msg.h"
#include "Obj_Module.h"
ACE_RCSID(src, Obj_Module, "$Id$")
//----------------------------------------------------------------------------
Obj_Module::Obj_Module (const ACE_CString &name, int cap)
: name_ (name),
imports_(cap),
exports_(cap),
extrefs_(0)
{
}
ACE_CString &
Obj_Module::name()
{
return name_;
}
Sig_List &
Obj_Module::exports()
{
return exports_;
}
Sig_List &
Obj_Module::imports()
{
return imports_;
}
int
Obj_Module::extref()
{
return extrefs_;
}
void
Obj_Module::add_extref()
{
extrefs_ ++;
}
void
Obj_Module::remove_extref()
{
extrefs_ --;
}
int
Obj_Module::read_line (ACE_HANDLE src, ACE_Message_Block **buf)
{
int eoln = 0;
// ACE_Time_Value timeout (1,0);
if (buf == 0 || *buf == 0) {
char dummy;
while (!eoln && ACE_OS::read(src,&dummy,1) == 1) {
eoln = (dummy == '\n');
}
return eoln;
}
// while (!eoln && ACE::recv(src,buf->wr_ptr(),1,&timeout) == 1) {
while (!eoln && ACE_OS::read(src,(*buf)->wr_ptr(),1) == 1) {
eoln = (*(*buf)->wr_ptr() == '\n');
(*buf)->wr_ptr(1);
if ((*buf)->space() == 0) {
(*buf)->cont(new ACE_Message_Block(102400));
*buf = (*buf)->cont();
}
}
return eoln;
}
void
Obj_Module::add_source(const char *p, int imports_only)
{
ACE_Process nmproc;
ACE_Process_Options nm_opts;
ACE_CString path (p);
int pathsep = path.rfind('/');
ACE_CString src_name;
ACE_CString workpath;
if (pathsep == ACE_CString::npos) {
src_name = path;
workpath = ".";
} else {
src_name = path.substr(pathsep+1);
workpath= path.substr(0,pathsep);
}
ACE_HANDLE pipe[2];
ACE_Pipe io(pipe);
nm_opts.working_directory (workpath.c_str());
nm_opts.set_handles (ACE_STDIN,pipe[1]);
// Options for the command line shown here are for the GNU nm 2.9.5
int result = nm_opts.command_line ("nm -C %s",src_name.c_str());
// Prevent compiler warning about "unused variable" if ACE_ASSERT is
// an empty macro.
ACE_UNUSED_ARG (result);
ACE_ASSERT (result == 0);
nmproc.spawn (nm_opts);
if (ACE_OS::close(pipe[1]) == -1)
ACE_DEBUG ((LM_DEBUG, "%p\n", "close"));
nm_opts.release_handles();
int import_lines = 0;
int export_lines = 0;
ACE_Message_Block im_buffer (102400);
ACE_Message_Block ex_buffer (102400);
ACE_Message_Block *im_buf_cur = &im_buffer;
ACE_Message_Block *ex_buf_cur = &ex_buffer;
char dummy;
int eoln = 1;
// ACE_Time_Value timeout (1,0);
int is_import = 1;
int is_export = 1;
while (eoln == 1) {
for (int i = 0; i < 10; i++) {
if (ACE_OS::read(pipe[0],&dummy,1) != 1) {
eoln = 2;
break;
}
}
if (eoln == 2)
break;
is_import = dummy == 'U';
is_export = !imports_only && (ACE_OS::strchr("BCDRTVW",dummy) != 0);
// if (ACE::recv(pipe[0],&dummy,1,&timeout) != 1)
if (ACE_OS::read(pipe[0],&dummy,1) != 1)
break;
eoln = this->read_line (pipe[0], is_import ? &im_buf_cur :
(is_export ? &ex_buf_cur : 0));
import_lines += is_import;
export_lines += is_export;
}
// ACE_DEBUG ((LM_DEBUG, "read %d import lines and %d export lines\n",
// import_lines, export_lines));
nmproc.wait ();
ACE_OS::close (pipe[0]);
this->populate_sig_list (imports_,import_lines,&im_buffer);
if (!imports_only)
this->populate_sig_list (exports_,export_lines,&ex_buffer);
}
void
Obj_Module::populate_sig_list (Sig_List &siglist,
int lines,
ACE_Message_Block *buf)
{
char *c;
ACE_CString temp;
for (int i = 0; i < lines; i++) {
for (c = buf->rd_ptr();
c != buf->wr_ptr() && *c != '\n'; c++);
temp += ACE_CString(buf->rd_ptr(),(c - buf->rd_ptr()));
buf->rd_ptr(c+1);
if (*c == '\n') {
// ACE_DEBUG ((LM_DEBUG, "%s\n",temp.c_str()));
siglist.add (temp);
temp.clear();
} else {
buf = buf->cont();
if (buf == 0) {
siglist.add (temp);
}
}
}
}
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