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authorChris Robinson <[email protected]>2019-07-28 18:56:04 -0700
committerChris Robinson <[email protected]>2019-07-28 18:56:04 -0700
commitcb3e96e75640730b9391f0d2d922eecd9ee2ce79 (patch)
tree23520551bddb2a80354e44da47f54201fdc084f0 /Alc/helpers.cpp
parent93e60919c8f387c36c267ca9faa1ac653254aea6 (diff)
Rename Alc to alc
Diffstat (limited to 'Alc/helpers.cpp')
-rw-r--r--Alc/helpers.cpp851
1 files changed, 0 insertions, 851 deletions
diff --git a/Alc/helpers.cpp b/Alc/helpers.cpp
deleted file mode 100644
index e86af6ce..00000000
--- a/Alc/helpers.cpp
+++ /dev/null
@@ -1,851 +0,0 @@
-/**
- * OpenAL cross platform audio library
- * Copyright (C) 2011 by authors.
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- * Or go to http://www.gnu.org/copyleft/lgpl.html
- */
-
-#ifdef _WIN32
-#ifdef __MINGW32__
-#define _WIN32_IE 0x501
-#else
-#define _WIN32_IE 0x400
-#endif
-#endif
-
-#include "config.h"
-
-#include <algorithm>
-#include <cerrno>
-#include <cstdarg>
-#include <cstdlib>
-#include <cstdio>
-#include <cstring>
-#include <mutex>
-#include <string>
-
-#ifdef HAVE_DIRENT_H
-#include <dirent.h>
-#endif
-#ifdef HAVE_PROC_PIDPATH
-#include <libproc.h>
-#endif
-
-#ifdef __FreeBSD__
-#include <sys/types.h>
-#include <sys/sysctl.h>
-#endif
-
-#ifndef AL_NO_UID_DEFS
-#if defined(HAVE_GUIDDEF_H) || defined(HAVE_INITGUID_H)
-#define INITGUID
-#include <windows.h>
-#ifdef HAVE_GUIDDEF_H
-#include <guiddef.h>
-#else
-#include <initguid.h>
-#endif
-
-DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
-DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
-
-DEFINE_GUID(IID_IDirectSoundNotify, 0xb0210783, 0x89cd, 0x11d0, 0xaf,0x08, 0x00,0xa0,0xc9,0x25,0xcd,0x16);
-
-DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xbcde0395, 0xe52f, 0x467c, 0x8e,0x3d, 0xc4,0x57,0x92,0x91,0x69,0x2e);
-DEFINE_GUID(IID_IMMDeviceEnumerator, 0xa95664d2, 0x9614, 0x4f35, 0xa7,0x46, 0xde,0x8d,0xb6,0x36,0x17,0xe6);
-DEFINE_GUID(IID_IAudioClient, 0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1,0x78, 0xc2,0xf5,0x68,0xa7,0x03,0xb2);
-DEFINE_GUID(IID_IAudioRenderClient, 0xf294acfc, 0x3146, 0x4483, 0xa7,0xbf, 0xad,0xdc,0xa7,0xc2,0x60,0xe2);
-DEFINE_GUID(IID_IAudioCaptureClient, 0xc8adbd64, 0xe71e, 0x48a0, 0xa4,0xde, 0x18,0x5c,0x39,0x5c,0xd3,0x17);
-
-#ifdef HAVE_WASAPI
-#include <wtypes.h>
-#include <devpropdef.h>
-#include <propkeydef.h>
-DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14);
-DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_FormFactor, 0x1da5d803, 0xd492, 0x4edd, 0x8c,0x23, 0xe0,0xc0,0xff,0xee,0x7f,0x0e, 0);
-DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_GUID, 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23,0xe0, 0xc0,0xff,0xee,0x7f,0x0e, 4 );
-#endif
-#endif
-#endif /* AL_NO_UID_DEFS */
-
-#ifdef HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-#ifdef HAVE_INTRIN_H
-#include <intrin.h>
-#endif
-#ifdef HAVE_CPUID_H
-#include <cpuid.h>
-#endif
-#ifdef HAVE_SSE_INTRINSICS
-#include <xmmintrin.h>
-#endif
-#ifdef HAVE_SYS_SYSCONF_H
-#include <sys/sysconf.h>
-#endif
-
-#ifndef _WIN32
-#include <unistd.h>
-#elif defined(_WIN32_IE)
-#include <shlobj.h>
-#endif
-
-#include "alcmain.h"
-#include "almalloc.h"
-#include "compat.h"
-#include "cpu_caps.h"
-#include "fpu_modes.h"
-#include "logging.h"
-
-
-#if defined(HAVE_GCC_GET_CPUID) && (defined(__i386__) || defined(__x86_64__) || \
- defined(_M_IX86) || defined(_M_X64))
-using reg_type = unsigned int;
-static inline void get_cpuid(int f, reg_type *regs)
-{ __get_cpuid(f, &regs[0], &regs[1], &regs[2], &regs[3]); }
-#define CAN_GET_CPUID
-#elif defined(HAVE_CPUID_INTRINSIC) && (defined(__i386__) || defined(__x86_64__) || \
- defined(_M_IX86) || defined(_M_X64))
-using reg_type = int;
-static inline void get_cpuid(int f, reg_type *regs)
-{ (__cpuid)(regs, f); }
-#define CAN_GET_CPUID
-#endif
-
-int CPUCapFlags = 0;
-
-void FillCPUCaps(int capfilter)
-{
- int caps = 0;
-
-/* FIXME: We really should get this for all available CPUs in case different
- * CPUs have different caps (is that possible on one machine?). */
-#ifdef CAN_GET_CPUID
- union {
- reg_type regs[4];
- char str[sizeof(reg_type[4])];
- } cpuinf[3] = {{ { 0, 0, 0, 0 } }};
-
- get_cpuid(0, cpuinf[0].regs);
- if(cpuinf[0].regs[0] == 0)
- ERR("Failed to get CPUID\n");
- else
- {
- unsigned int maxfunc = cpuinf[0].regs[0];
- unsigned int maxextfunc;
-
- get_cpuid(0x80000000, cpuinf[0].regs);
- maxextfunc = cpuinf[0].regs[0];
-
- TRACE("Detected max CPUID function: 0x%x (ext. 0x%x)\n", maxfunc, maxextfunc);
-
- TRACE("Vendor ID: \"%.4s%.4s%.4s\"\n", cpuinf[0].str+4, cpuinf[0].str+12, cpuinf[0].str+8);
- if(maxextfunc >= 0x80000004)
- {
- get_cpuid(0x80000002, cpuinf[0].regs);
- get_cpuid(0x80000003, cpuinf[1].regs);
- get_cpuid(0x80000004, cpuinf[2].regs);
- TRACE("Name: \"%.16s%.16s%.16s\"\n", cpuinf[0].str, cpuinf[1].str, cpuinf[2].str);
- }
-
- if(maxfunc >= 1)
- {
- get_cpuid(1, cpuinf[0].regs);
- if((cpuinf[0].regs[3]&(1<<25)))
- caps |= CPU_CAP_SSE;
- if((caps&CPU_CAP_SSE) && (cpuinf[0].regs[3]&(1<<26)))
- caps |= CPU_CAP_SSE2;
- if((caps&CPU_CAP_SSE2) && (cpuinf[0].regs[2]&(1<<0)))
- caps |= CPU_CAP_SSE3;
- if((caps&CPU_CAP_SSE3) && (cpuinf[0].regs[2]&(1<<19)))
- caps |= CPU_CAP_SSE4_1;
- }
- }
-#else
- /* Assume support for whatever's supported if we can't check for it */
-#if defined(HAVE_SSE4_1)
-#warning "Assuming SSE 4.1 run-time support!"
- caps |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3 | CPU_CAP_SSE4_1;
-#elif defined(HAVE_SSE3)
-#warning "Assuming SSE 3 run-time support!"
- caps |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3;
-#elif defined(HAVE_SSE2)
-#warning "Assuming SSE 2 run-time support!"
- caps |= CPU_CAP_SSE | CPU_CAP_SSE2;
-#elif defined(HAVE_SSE)
-#warning "Assuming SSE run-time support!"
- caps |= CPU_CAP_SSE;
-#endif
-#endif
-#ifdef HAVE_NEON
- al::ifstream file{"/proc/cpuinfo"};
- if(!file.is_open())
- ERR("Failed to open /proc/cpuinfo, cannot check for NEON support\n");
- else
- {
- std::string features;
-
- auto getline = [](std::istream &f, std::string &output) -> bool
- {
- while(f.good() && f.peek() == '\n')
- f.ignore();
- return std::getline(f, output) && !output.empty();
-
- };
- while(getline(file, features))
- {
- if(features.compare(0, 10, "Features\t:", 10) == 0)
- break;
- }
- file.close();
-
- size_t extpos{9};
- while((extpos=features.find("neon", extpos+1)) != std::string::npos)
- {
- if((extpos == 0 || std::isspace(features[extpos-1])) &&
- (extpos+4 == features.length() || std::isspace(features[extpos+4])))
- {
- caps |= CPU_CAP_NEON;
- break;
- }
- }
- }
-#endif
-
- TRACE("Extensions:%s%s%s%s%s%s\n",
- ((capfilter&CPU_CAP_SSE) ? ((caps&CPU_CAP_SSE) ? " +SSE" : " -SSE") : ""),
- ((capfilter&CPU_CAP_SSE2) ? ((caps&CPU_CAP_SSE2) ? " +SSE2" : " -SSE2") : ""),
- ((capfilter&CPU_CAP_SSE3) ? ((caps&CPU_CAP_SSE3) ? " +SSE3" : " -SSE3") : ""),
- ((capfilter&CPU_CAP_SSE4_1) ? ((caps&CPU_CAP_SSE4_1) ? " +SSE4.1" : " -SSE4.1") : ""),
- ((capfilter&CPU_CAP_NEON) ? ((caps&CPU_CAP_NEON) ? " +NEON" : " -NEON") : ""),
- ((!capfilter) ? " -none-" : "")
- );
- CPUCapFlags = caps & capfilter;
-}
-
-
-FPUCtl::FPUCtl()
-{
-#if defined(HAVE_SSE_INTRINSICS)
- this->sse_state = _mm_getcsr();
- unsigned int sseState = this->sse_state;
- sseState |= 0x8000; /* set flush-to-zero */
- sseState |= 0x0040; /* set denormals-are-zero */
- _mm_setcsr(sseState);
-
-#elif defined(__GNUC__) && defined(HAVE_SSE)
-
- if((CPUCapFlags&CPU_CAP_SSE))
- {
- __asm__ __volatile__("stmxcsr %0" : "=m" (*&this->sse_state));
- unsigned int sseState = this->sse_state;
- sseState |= 0x8000; /* set flush-to-zero */
- if((CPUCapFlags&CPU_CAP_SSE2))
- sseState |= 0x0040; /* set denormals-are-zero */
- __asm__ __volatile__("ldmxcsr %0" : : "m" (*&sseState));
- }
-#endif
-
- this->in_mode = true;
-}
-
-void FPUCtl::leave()
-{
- if(!this->in_mode) return;
-
-#if defined(HAVE_SSE_INTRINSICS)
- _mm_setcsr(this->sse_state);
-
-#elif defined(__GNUC__) && defined(HAVE_SSE)
-
- if((CPUCapFlags&CPU_CAP_SSE))
- __asm__ __volatile__("ldmxcsr %0" : : "m" (*&this->sse_state));
-#endif
- this->in_mode = false;
-}
-
-
-#ifdef _WIN32
-
-namespace al {
-
-auto filebuf::underflow() -> int_type
-{
- if(mFile != INVALID_HANDLE_VALUE && gptr() == egptr())
- {
- // Read in the next chunk of data, and set the pointers on success
- DWORD got{};
- if(ReadFile(mFile, mBuffer.data(), (DWORD)mBuffer.size(), &got, nullptr))
- setg(mBuffer.data(), mBuffer.data(), mBuffer.data()+got);
- }
- if(gptr() == egptr())
- return traits_type::eof();
- return traits_type::to_int_type(*gptr());
-}
-
-auto filebuf::seekoff(off_type offset, std::ios_base::seekdir whence, std::ios_base::openmode mode) -> pos_type
-{
- if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in))
- return traits_type::eof();
-
- LARGE_INTEGER fpos{};
- switch(whence)
- {
- case std::ios_base::beg:
- fpos.QuadPart = offset;
- if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN))
- return traits_type::eof();
- break;
-
- case std::ios_base::cur:
- // If the offset remains in the current buffer range, just
- // update the pointer.
- if((offset >= 0 && offset < off_type(egptr()-gptr())) ||
- (offset < 0 && -offset <= off_type(gptr()-eback())))
- {
- // Get the current file offset to report the correct read
- // offset.
- fpos.QuadPart = 0;
- if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT))
- return traits_type::eof();
- setg(eback(), gptr()+offset, egptr());
- return fpos.QuadPart - off_type(egptr()-gptr());
- }
- // Need to offset for the file offset being at egptr() while
- // the requested offset is relative to gptr().
- offset -= off_type(egptr()-gptr());
- fpos.QuadPart = offset;
- if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT))
- return traits_type::eof();
- break;
-
- case std::ios_base::end:
- fpos.QuadPart = offset;
- if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_END))
- return traits_type::eof();
- break;
-
- default:
- return traits_type::eof();
- }
- setg(nullptr, nullptr, nullptr);
- return fpos.QuadPart;
-}
-
-auto filebuf::seekpos(pos_type pos, std::ios_base::openmode mode) -> pos_type
-{
- // Simplified version of seekoff
- if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in))
- return traits_type::eof();
-
- LARGE_INTEGER fpos{};
- fpos.QuadPart = pos;
- if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN))
- return traits_type::eof();
-
- setg(nullptr, nullptr, nullptr);
- return fpos.QuadPart;
-}
-
-filebuf::~filebuf()
-{
- if(mFile != INVALID_HANDLE_VALUE)
- CloseHandle(mFile);
- mFile = INVALID_HANDLE_VALUE;
-}
-
-bool filebuf::open(const wchar_t *filename, std::ios_base::openmode mode)
-{
- if((mode&std::ios_base::out) || !(mode&std::ios_base::in))
- return false;
- HANDLE f{CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL, nullptr)};
- if(f == INVALID_HANDLE_VALUE) return false;
-
- if(mFile != INVALID_HANDLE_VALUE)
- CloseHandle(mFile);
- mFile = f;
-
- setg(nullptr, nullptr, nullptr);
- return true;
-}
-bool filebuf::open(const char *filename, std::ios_base::openmode mode)
-{
- std::wstring wname{utf8_to_wstr(filename)};
- return open(wname.c_str(), mode);
-}
-
-
-ifstream::ifstream(const wchar_t *filename, std::ios_base::openmode mode)
- : std::istream{nullptr}
-{
- init(&mStreamBuf);
-
- // Set the failbit if the file failed to open.
- if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in))
- clear(failbit);
-}
-
-ifstream::ifstream(const char *filename, std::ios_base::openmode mode)
- : std::istream{nullptr}
-{
- init(&mStreamBuf);
-
- // Set the failbit if the file failed to open.
- if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in))
- clear(failbit);
-}
-
-/* This is only here to ensure the compiler doesn't define an implicit
- * destructor, which it tries to automatically inline and subsequently complain
- * it can't inline without excessive code growth.
- */
-ifstream::~ifstream() { }
-
-} // namespace al
-
-const PathNamePair &GetProcBinary()
-{
- static PathNamePair ret;
- if(!ret.fname.empty() || !ret.path.empty())
- return ret;
-
- al::vector<WCHAR> fullpath(256);
- DWORD len;
- while((len=GetModuleFileNameW(nullptr, fullpath.data(), static_cast<DWORD>(fullpath.size()))) == fullpath.size())
- fullpath.resize(fullpath.size() << 1);
- if(len == 0)
- {
- ERR("Failed to get process name: error %lu\n", GetLastError());
- return ret;
- }
-
- fullpath.resize(len);
- if(fullpath.back() != 0)
- fullpath.push_back(0);
-
- auto sep = std::find(fullpath.rbegin()+1, fullpath.rend(), '\\');
- sep = std::find(fullpath.rbegin()+1, sep, '/');
- if(sep != fullpath.rend())
- {
- *sep = 0;
- ret.fname = wstr_to_utf8(&*sep + 1);
- ret.path = wstr_to_utf8(fullpath.data());
- }
- else
- ret.fname = wstr_to_utf8(fullpath.data());
-
- TRACE("Got binary: %s, %s\n", ret.path.c_str(), ret.fname.c_str());
- return ret;
-}
-
-
-void *LoadLib(const char *name)
-{
- std::wstring wname{utf8_to_wstr(name)};
- return LoadLibraryW(wname.c_str());
-}
-void CloseLib(void *handle)
-{ FreeLibrary(static_cast<HMODULE>(handle)); }
-void *GetSymbol(void *handle, const char *name)
-{
- void *ret{reinterpret_cast<void*>(GetProcAddress(static_cast<HMODULE>(handle), name))};
- if(!ret) ERR("Failed to load %s\n", name);
- return ret;
-}
-
-
-void al_print(FILE *logfile, const char *fmt, ...)
-{
- al::vector<char> dynmsg;
- char stcmsg[256];
- char *str{stcmsg};
-
- va_list args, args2;
- va_start(args, fmt);
- va_copy(args2, args);
- int msglen{std::vsnprintf(str, sizeof(stcmsg), fmt, args)};
- if(UNLIKELY(msglen >= 0 && static_cast<size_t>(msglen) >= sizeof(stcmsg)))
- {
- dynmsg.resize(static_cast<size_t>(msglen) + 1u);
- str = dynmsg.data();
- msglen = std::vsnprintf(str, dynmsg.size(), fmt, args2);
- }
- va_end(args2);
- va_end(args);
-
- std::wstring wstr{utf8_to_wstr(str)};
- fprintf(logfile, "%ls", wstr.c_str());
- fflush(logfile);
-}
-
-
-static inline int is_slash(int c)
-{ return (c == '\\' || c == '/'); }
-
-static void DirectorySearch(const char *path, const char *ext, al::vector<std::string> *const results)
-{
- std::string pathstr{path};
- pathstr += "\\*";
- pathstr += ext;
- TRACE("Searching %s\n", pathstr.c_str());
-
- std::wstring wpath{utf8_to_wstr(pathstr.c_str())};
- WIN32_FIND_DATAW fdata;
- HANDLE hdl{FindFirstFileW(wpath.c_str(), &fdata)};
- if(hdl != INVALID_HANDLE_VALUE)
- {
- size_t base = results->size();
- do {
- results->emplace_back();
- std::string &str = results->back();
- str = path;
- str += '\\';
- str += wstr_to_utf8(fdata.cFileName);
- TRACE("Got result %s\n", str.c_str());
- } while(FindNextFileW(hdl, &fdata));
- FindClose(hdl);
-
- std::sort(results->begin()+base, results->end());
- }
-}
-
-al::vector<std::string> SearchDataFiles(const char *ext, const char *subdir)
-{
- static std::mutex search_lock;
- std::lock_guard<std::mutex> _{search_lock};
-
- /* If the path is absolute, use it directly. */
- al::vector<std::string> results;
- if(isalpha(subdir[0]) && subdir[1] == ':' && is_slash(subdir[2]))
- {
- std::string path{subdir};
- std::replace(path.begin(), path.end(), '/', '\\');
- DirectorySearch(path.c_str(), ext, &results);
- return results;
- }
- if(subdir[0] == '\\' && subdir[1] == '\\' && subdir[2] == '?' && subdir[3] == '\\')
- {
- DirectorySearch(subdir, ext, &results);
- return results;
- }
-
- std::string path;
-
- /* Search the app-local directory. */
- WCHAR *cwdbuf{_wgetenv(L"ALSOFT_LOCAL_PATH")};
- if(cwdbuf && *cwdbuf != '\0')
- {
- path = wstr_to_utf8(cwdbuf);
- if(is_slash(path.back()))
- path.pop_back();
- }
- else if(!(cwdbuf=_wgetcwd(nullptr, 0)))
- path = ".";
- else
- {
- path = wstr_to_utf8(cwdbuf);
- if(is_slash(path.back()))
- path.pop_back();
- free(cwdbuf);
- }
- std::replace(path.begin(), path.end(), '/', '\\');
- DirectorySearch(path.c_str(), ext, &results);
-
- /* Search the local and global data dirs. */
- static constexpr int ids[2]{ CSIDL_APPDATA, CSIDL_COMMON_APPDATA };
- for(int id : ids)
- {
- WCHAR buffer[MAX_PATH];
- if(SHGetSpecialFolderPathW(nullptr, buffer, id, FALSE) == FALSE)
- continue;
-
- path = wstr_to_utf8(buffer);
- if(!is_slash(path.back()))
- path += '\\';
- path += subdir;
- std::replace(path.begin(), path.end(), '/', '\\');
-
- DirectorySearch(path.c_str(), ext, &results);
- }
-
- return results;
-}
-
-void SetRTPriority(void)
-{
- bool failed = false;
- if(RTPrioLevel > 0)
- failed = !SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
- if(failed) ERR("Failed to set priority level for thread\n");
-}
-
-#else
-
-const PathNamePair &GetProcBinary()
-{
- static PathNamePair ret;
- if(!ret.fname.empty() || !ret.path.empty())
- return ret;
-
- al::vector<char> pathname;
-#ifdef __FreeBSD__
- size_t pathlen;
- int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
- if(sysctl(mib, 4, nullptr, &pathlen, nullptr, 0) == -1)
- WARN("Failed to sysctl kern.proc.pathname: %s\n", strerror(errno));
- else
- {
- pathname.resize(pathlen + 1);
- sysctl(mib, 4, pathname.data(), &pathlen, nullptr, 0);
- pathname.resize(pathlen);
- }
-#endif
-#ifdef HAVE_PROC_PIDPATH
- if(pathname.empty())
- {
- char procpath[PROC_PIDPATHINFO_MAXSIZE]{};
- const pid_t pid{getpid()};
- if(proc_pidpath(pid, procpath, sizeof(procpath)) < 1)
- ERR("proc_pidpath(%d, ...) failed: %s\n", pid, strerror(errno));
- else
- pathname.insert(pathname.end(), procpath, procpath+strlen(procpath));
- }
-#endif
- if(pathname.empty())
- {
- pathname.resize(256);
-
- const char *selfname{"/proc/self/exe"};
- ssize_t len{readlink(selfname, pathname.data(), pathname.size())};
- if(len == -1 && errno == ENOENT)
- {
- selfname = "/proc/self/file";
- len = readlink(selfname, pathname.data(), pathname.size());
- }
- if(len == -1 && errno == ENOENT)
- {
- selfname = "/proc/curproc/exe";
- len = readlink(selfname, pathname.data(), pathname.size());
- }
- if(len == -1 && errno == ENOENT)
- {
- selfname = "/proc/curproc/file";
- len = readlink(selfname, pathname.data(), pathname.size());
- }
-
- while(len > 0 && static_cast<size_t>(len) == pathname.size())
- {
- pathname.resize(pathname.size() << 1);
- len = readlink(selfname, pathname.data(), pathname.size());
- }
- if(len <= 0)
- {
- WARN("Failed to readlink %s: %s\n", selfname, strerror(errno));
- return ret;
- }
-
- pathname.resize(len);
- }
- while(!pathname.empty() && pathname.back() == 0)
- pathname.pop_back();
-
- auto sep = std::find(pathname.crbegin(), pathname.crend(), '/');
- if(sep != pathname.crend())
- {
- ret.path = std::string(pathname.cbegin(), sep.base()-1);
- ret.fname = std::string(sep.base(), pathname.cend());
- }
- else
- ret.fname = std::string(pathname.cbegin(), pathname.cend());
-
- TRACE("Got binary: %s, %s\n", ret.path.c_str(), ret.fname.c_str());
- return ret;
-}
-
-
-#ifdef HAVE_DLFCN_H
-
-void *LoadLib(const char *name)
-{
- dlerror();
- void *handle{dlopen(name, RTLD_NOW)};
- const char *err{dlerror()};
- if(err) handle = nullptr;
- return handle;
-}
-void CloseLib(void *handle)
-{ dlclose(handle); }
-void *GetSymbol(void *handle, const char *name)
-{
- dlerror();
- void *sym{dlsym(handle, name)};
- const char *err{dlerror()};
- if(err)
- {
- WARN("Failed to load %s: %s\n", name, err);
- sym = nullptr;
- }
- return sym;
-}
-
-#endif /* HAVE_DLFCN_H */
-
-void al_print(FILE *logfile, const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- vfprintf(logfile, fmt, ap);
- va_end(ap);
-
- fflush(logfile);
-}
-
-
-static void DirectorySearch(const char *path, const char *ext, al::vector<std::string> *const results)
-{
- TRACE("Searching %s for *%s\n", path, ext);
- DIR *dir{opendir(path)};
- if(dir != nullptr)
- {
- const size_t extlen = strlen(ext);
- size_t base = results->size();
-
- struct dirent *dirent;
- while((dirent=readdir(dir)) != nullptr)
- {
- if(strcmp(dirent->d_name, ".") == 0 || strcmp(dirent->d_name, "..") == 0)
- continue;
-
- size_t len{strlen(dirent->d_name)};
- if(len <= extlen) continue;
- if(strcasecmp(dirent->d_name+len-extlen, ext) != 0)
- continue;
-
- results->emplace_back();
- std::string &str = results->back();
- str = path;
- if(str.back() != '/')
- str.push_back('/');
- str += dirent->d_name;
- TRACE("Got result %s\n", str.c_str());
- }
- closedir(dir);
-
- std::sort(results->begin()+base, results->end());
- }
-}
-
-al::vector<std::string> SearchDataFiles(const char *ext, const char *subdir)
-{
- static std::mutex search_lock;
- std::lock_guard<std::mutex> _{search_lock};
-
- al::vector<std::string> results;
- if(subdir[0] == '/')
- {
- DirectorySearch(subdir, ext, &results);
- return results;
- }
-
- /* Search the app-local directory. */
- const char *str{getenv("ALSOFT_LOCAL_PATH")};
- if(str && *str != '\0')
- DirectorySearch(str, ext, &results);
- else
- {
- al::vector<char> cwdbuf(256);
- while(!getcwd(cwdbuf.data(), cwdbuf.size()))
- {
- if(errno != ERANGE)
- {
- cwdbuf.clear();
- break;
- }
- cwdbuf.resize(cwdbuf.size() << 1);
- }
- if(cwdbuf.empty())
- DirectorySearch(".", ext, &results);
- else
- {
- DirectorySearch(cwdbuf.data(), ext, &results);
- cwdbuf.clear();
- }
- }
-
- // Search local data dir
- if((str=getenv("XDG_DATA_HOME")) != nullptr && str[0] != '\0')
- {
- std::string path{str};
- if(path.back() != '/')
- path += '/';
- path += subdir;
- DirectorySearch(path.c_str(), ext, &results);
- }
- else if((str=getenv("HOME")) != nullptr && str[0] != '\0')
- {
- std::string path{str};
- if(path.back() == '/')
- path.pop_back();
- path += "/.local/share/";
- path += subdir;
- DirectorySearch(path.c_str(), ext, &results);
- }
-
- // Search global data dirs
- if((str=getenv("XDG_DATA_DIRS")) == nullptr || str[0] == '\0')
- str = "/usr/local/share/:/usr/share/";
-
- const char *next{str};
- while((str=next) != nullptr && str[0] != '\0')
- {
- next = strchr(str, ':');
-
- std::string path = (next ? std::string(str, next++) : std::string(str));
- if(path.empty()) continue;
-
- if(path.back() != '/')
- path += '/';
- path += subdir;
-
- DirectorySearch(path.c_str(), ext, &results);
- }
-
- return results;
-}
-
-void SetRTPriority()
-{
- bool failed = false;
-#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && !defined(__OpenBSD__)
- if(RTPrioLevel > 0)
- {
- struct sched_param param;
- /* Use the minimum real-time priority possible for now (on Linux this
- * should be 1 for SCHED_RR) */
- param.sched_priority = sched_get_priority_min(SCHED_RR);
- failed = !!pthread_setschedparam(pthread_self(), SCHED_RR, &param);
- }
-#else
- /* Real-time priority not available */
- failed = (RTPrioLevel>0);
-#endif
- if(failed)
- ERR("Failed to set priority level for thread\n");
-}
-
-#endif