bsnes/nall/invoke.hpp
Tim Allen 83f684c66c Update to v094r29 release.
byuu says:

Note: for Windows users, please go to nall/intrinsics.hpp line 60 and
correct the typo from "DISPLAY_WINDOW" to "DISPLAY_WINDOWS" before
compiling, otherwise things won't work at all.

This will be a really major WIP for the core SNES emulation, so please
test as thoroughly as possible.

I rewrote the 65816 CPU core's dispatcher from a jump table to a switch
table. This was so that I could pass class variables as parameters to
opcodes without crazy theatrics.

With that, I killed the regs.r[N] stuff, the flag_t operator|=, &=, ^=
stuff, and all of the template versions of opcodes.

I also removed some stupid pointless flag tests in xcn and pflag that
would always be true.

I sure hope that AWJ is happy with this; because this change was so that
my flag assignments and branch tests won't need to build regs.P into
a full 8-bit variable anymore.

It does of course incur a slight performance hit when you pass in
variables by-value to functions, but it should help with binary size
(and thus cache) by reducing a lot of extra functions. (I know I could
have used template parameters for some things even with a switch table,
but chose not to for the aforementioned reasons.)

Overall, it's about a ~1% speedup from the previous build. The CPU core
instructions were never a bottleneck, but I did want to fix the P flag
building stuff because that really was a dumb mistake v_v'
2015-06-22 23:31:49 +10:00

59 lines
1.7 KiB
C++

#ifndef NALL_INVOKE_HPP
#define NALL_INVOKE_HPP
//auto invoke(const string &name, const string& args...) -> void;
//if a program is specified, it is executed with the arguments provided
//if a file is specified, the file is opened using the program associated with said file type
//if a folder is specified, the folder is opened using the associated file explorer
//if a URL is specified, the default web browser is opened and pointed at the URL requested
//path environment variable is always consulted
//execution is asynchronous (non-blocking); use system() for synchronous execution
#include <nall/intrinsics.hpp>
#include <nall/string.hpp>
#if defined(PLATFORM_WINDOWS)
#include <nall/windows/utf8.hpp>
#endif
namespace nall {
#if defined(PLATFORM_WINDOWS)
template<typename... Args> inline auto invoke(const string& name, Args&&... args) -> void {
lstring argl(std::forward<Args>(args)...);
for(auto& arg : argl) if(arg.find(" ")) arg = {"\"", arg, "\""};
string arguments = argl.merge(" ");
ShellExecuteW(NULL, NULL, utf16_t(name), utf16_t(arguments), NULL, SW_SHOWNORMAL);
}
#elif defined(PLATFORM_LINUX) || defined(PLATFORM_BSD)
template<typename... Args> inline auto invoke(const string& name, Args&&... args) -> void {
pid_t pid = fork();
if(pid == 0) {
const char* argv[1 + sizeof...(args) + 1];
const char** argp = argv;
lstring argl(std::forward<Args>(args)...);
*argp++ = (const char*)name;
for(auto& arg : argl) *argp++ = (const char*)arg;
*argp++ = nullptr;
if(execvp(name, (char* const*)argv) < 0) {
execlp("xdg-open", "xdg-open", (const char*)name, nullptr);
}
exit(0);
}
}
#else
template<typename... Args> inline auto invoke(const string& name, Args&&... args) -> void {
}
#endif
}
#endif