Moved some reusable code from BApplication to this shiny new place.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@510 a95241bf-73f2-0310-859d-f6bbb57e9c96
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: AppMisc.h
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// Author: Ingo Weinhold (bonefish@users.sf.net)
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// Description: Miscellaneous private functionality.
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//------------------------------------------------------------------------------
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#ifndef _APP_MISC_H
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#define _APP_MISC_H
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#include <OS.h>
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#include <SupportDefs.h>
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struct entry_ref;
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status_t get_app_path(char *buffer);
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status_t get_app_ref(entry_ref *ref, bool traverse = true);
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thread_id main_thread_for(team_id team);
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#endif // _APP_MISC_H
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: AppMisc.cpp
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// Author: Ingo Weinhold (bonefish@users.sf.net)
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// Description: Miscellaneous private functionality.
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//------------------------------------------------------------------------------
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#include <string.h>
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#include <AppMisc.h>
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#include <Entry.h>
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#include <image.h>
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#include <OS.h>
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// get_app_path
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/*! \brief Returns the path to the application's executable.
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\param buffer A pointer to a pre-allocated character array of at least
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size B_PATH_NAME_LENGTH + 1 to be filled in by this function.
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\return
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- \c B_OK: Everything went fine.
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- \c B_BAD_VALUE: \c NULL \a buffer.
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- another error code
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*/
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status_t
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get_app_path(char *buffer)
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{
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status_t error = (buffer ? B_OK : B_BAD_VALUE);
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image_info info;
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int32 cookie = 0;
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bool found = false;
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if (error == B_OK) {
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while (!found && get_next_image_info(0, &cookie, &info) == B_OK) {
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if (info.type == B_APP_IMAGE) {
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strncpy(buffer, info.name, B_PATH_NAME_LENGTH);
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buffer[B_PATH_NAME_LENGTH] = 0;
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found = true;
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}
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}
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}
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if (error == B_OK && !found)
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error = B_ENTRY_NOT_FOUND;
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return error;
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}
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// get_app_ref
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/*! \brief Returns an entry_ref referring to the application's exectable.
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\param ref A pointer to a pre-allocated entry_ref to be initialized
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to an entry_ref referring to the application's executable.
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\param traverse If \c true, the function traverses symbolic links.
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\return
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- \c B_OK: Everything went fine.
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- \c B_BAD_VALUE: \c NULL \a ref.
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- another error code
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*/
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status_t
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get_app_ref(entry_ref *ref, bool traverse)
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{
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status_t error = (ref ? B_OK : B_BAD_VALUE);
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char appFilePath[B_PATH_NAME_LENGTH + 1];
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if (error == B_OK)
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error = get_app_path(appFilePath);
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if (error == B_OK) {
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BEntry entry(appFilePath, traverse);
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error = entry.GetRef(ref);
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}
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return error;
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}
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// main_thread_for
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/*! Returns the ID of the supplied team's main thread.
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\param team The team.
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\return
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- The thread ID of the supplied team's main thread
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- \c B_BAD_TEAM_ID: The supplied team ID does not identify a running team.
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- another error code
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*/
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thread_id
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main_thread_for(team_id team)
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{
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// For I can't find any trace of how to explicitly get the main thread,
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// I assume the main thread is the one with the least thread ID.
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thread_id thread = -1;
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int32 cookie = 0;
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thread_info info;
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while (get_next_thread_info(team, &cookie, &info) == B_OK) {
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if (thread < 0 || info.thread < thread)
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thread = info.thread;
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}
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return thread;
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}
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