mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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/* TODO: Rename, if we change to e.g. use amsMain? */
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extern "C" int main(int argc, char **argv);
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namespace ams::diag::impl {
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uintptr_t GetModuleInfoForHorizon(const char **out_path, size_t *out_path_length, size_t *out_module_size, uintptr_t address);
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namespace {
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const char *GetLastCharacterPointer(const char *str, size_t len, char c) {
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for (const char *last = str + len - 1; last >= str; --last) {
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if (*last == c) {
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return last;
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}
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}
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return nullptr;
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}
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void GetFileNameWithoutExtension(const char **out, size_t *out_size, const char *path, size_t path_length) {
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const auto last_sep1 = GetLastCharacterPointer(path, path_length, '\\');
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const auto last_sep2 = GetLastCharacterPointer(path, path_length, '/');
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const auto ext = GetLastCharacterPointer(path, path_length, '.');
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/* Handle last-separator. */
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if (last_sep1 && last_sep2) {
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if (last_sep1 > last_sep2) {
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*out = last_sep1 + 1;
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} else {
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*out = last_sep2 + 1;
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}
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} else if (last_sep1) {
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*out = last_sep1 + 1;
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} else if (last_sep2) {
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*out = last_sep2 + 1;
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} else {
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*out = path;
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}
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/* Handle extension. */
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if (ext && ext >= *out) {
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*out_size = ext - *out;
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} else {
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*out_size = (path + path_length) - *out;
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}
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}
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constinit const char *g_process_name = nullptr;
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constinit size_t g_process_name_size = 0;
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constinit os::SdkMutex g_process_name_lock;
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constinit bool g_got_process_name = false;
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void EnsureProcessNameCached() {
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/* Ensure process name. */
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if (AMS_UNLIKELY(!g_got_process_name)) {
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std::scoped_lock lk(g_process_name_lock);
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if (AMS_LIKELY(!g_got_process_name)) {
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const char *path;
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size_t path_length;
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size_t module_size;
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if (GetModuleInfoForHorizon(std::addressof(path), std::addressof(path_length), std::addressof(module_size), reinterpret_cast<uintptr_t>(main)) != 0) {
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GetFileNameWithoutExtension(std::addressof(g_process_name), std::addressof(g_process_name_size), path, path_length);
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AMS_ASSERT(g_process_name_size == 0 || util::VerifyUtf8String(g_process_name, g_process_name_size));
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} else {
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g_process_name = "";
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g_process_name_size = 0;
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}
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}
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}
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}
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}
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void GetProcessNamePointer(const char **out, size_t *out_size) {
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/* Ensure process name is cached. */
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EnsureProcessNameCached();
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/* Get cached process name. */
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*out = g_process_name;
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*out_size = g_process_name_size;
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}
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}
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