Atmosphere/stratosphere/loader/source/ldr_launch_queue.cpp

102 lines
2.8 KiB
C++

/*
* Copyright (c) 2018 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <switch.h>
#include <stratosphere.hpp>
#include <algorithm>
#include <array>
#include <cstdio>
#include "ldr_launch_queue.hpp"
#include "meta_tools.hpp"
static std::array<LaunchQueue::LaunchItem, LAUNCH_QUEUE_SIZE> g_launch_queue = {0};
Result LaunchQueue::Add(u64 tid, const char *args, u64 arg_size) {
if (arg_size > LAUNCH_QUEUE_ARG_SIZE_MAX) {
return ResultLoaderTooLongArgument;
}
int idx = GetFreeIndex(tid);
if (idx == LAUNCH_QUEUE_FULL) {
return ResultLoaderTooManyArguments;
}
g_launch_queue[idx].tid = tid;
g_launch_queue[idx].arg_size = arg_size;
std::copy(args, args + arg_size, g_launch_queue[idx].args);
return 0x0;
}
Result LaunchQueue::AddCopy(u64 tid_base, u64 tid) {
int idx = GetIndex(tid_base);
if (idx == LAUNCH_QUEUE_FULL) {
return 0x0;
}
return Add(tid, g_launch_queue[idx].args, g_launch_queue[idx].arg_size);
}
Result LaunchQueue::AddItem(const LaunchItem *item) {
if (item->arg_size > LAUNCH_QUEUE_ARG_SIZE_MAX) {
return ResultLoaderTooLongArgument;
}
int idx = GetFreeIndex(item->tid);
if (idx == LAUNCH_QUEUE_FULL) {
return ResultLoaderTooManyArguments;
}
g_launch_queue[idx] = *item;
return 0x0;
}
int LaunchQueue::GetIndex(u64 tid) {
auto it = std::find_if(g_launch_queue.begin(), g_launch_queue.end(), member_equals_fn(&LaunchQueue::LaunchItem::tid, tid));
if (it == g_launch_queue.end()) {
return LAUNCH_QUEUE_FULL;
}
return std::distance(g_launch_queue.begin(), it);
}
int LaunchQueue::GetFreeIndex(u64 tid) {
for (unsigned int i = 0; i < LAUNCH_QUEUE_SIZE; i++) {
if (g_launch_queue[i].tid == tid || g_launch_queue[i].tid == 0x0) {
return i;
}
}
return LAUNCH_QUEUE_FULL;
}
bool LaunchQueue::Contains(u64 tid) {
return GetIndex(tid) != LAUNCH_QUEUE_FULL;
}
void LaunchQueue::Clear() {
for (unsigned int i = 0; i < LAUNCH_QUEUE_SIZE; i++) {
g_launch_queue[i].tid = 0;
}
}
LaunchQueue::LaunchItem *LaunchQueue::GetItem(u64 tid) {
int idx = GetIndex(tid);
if (idx == LAUNCH_QUEUE_FULL) {
return NULL;
}
return &g_launch_queue[idx];
}