Mercurial > repos > blastem
view terminal.c @ 1971:80920c21bb52
Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 08 May 2020 11:40:30 -0700 |
parents | 0433fdd9ba66 |
children | 794ba17f0716 |
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#include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <fcntl.h> #include <stdlib.h> #include <stdint.h> #include <signal.h> #include "util.h" #include "terminal.h" pid_t child; void cleanup_terminal() { kill(child, SIGKILL); unlink(INPUT_PATH); unlink(OUTPUT_PATH); } static char init_done; void force_no_terminal() { init_done = 1; } void init_terminal() { if (!init_done) { if (!(isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))) { #ifndef __APPLE__ //check to see if x-terminal-emulator exists, just use xterm if it doesn't char *term = system("which x-terminal-emulator > /dev/null") ? "xterm" : "x-terminal-emulator"; #endif //get rid of FIFO's if they already exist unlink(INPUT_PATH); unlink(OUTPUT_PATH); //create FIFOs for talking to helper process in terminal app mkfifo(INPUT_PATH, 0666); mkfifo(OUTPUT_PATH, 0666); //close existing file descriptors close(STDIN_FILENO); close(STDOUT_FILENO); close(STDERR_FILENO); child = fork(); if (child == -1) { //error, oh well warning("Failed to fork for terminal spawn"); } else if (!child) { //child process, exec our terminal emulator #ifdef __APPLE__ execlp("open", "open", "./termhelper", NULL); #else execlp(term, term, "-title", "BlastEm Debugger", "-e", "./termhelper", NULL); #endif } else { //connect to the FIFOs, these will block so order is important open(INPUT_PATH, O_RDONLY); open(OUTPUT_PATH, O_WRONLY); atexit(cleanup_terminal); if (-1 == dup(STDOUT_FILENO)) { fatal_error("failed to dup STDOUT to STDERR after terminal fork"); } } } init_done = 1; } }