Mercurial > repos > blastem
annotate terminal.c @ 1424:4f96103b4b47
Fix s(tep) debug command for the case of dbra with an expired counter reg
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 06 Jul 2017 21:51:35 -0700 |
parents | 0433fdd9ba66 |
children | 794ba17f0716 |
rev | line source |
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794
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Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
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1 #include <sys/types.h> |
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2 #include <sys/stat.h> |
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3 #include <unistd.h> |
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4 #include <fcntl.h> |
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5 #include <stdlib.h> |
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6 #include <stdint.h> |
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7 #include <signal.h> |
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8 #include "util.h" |
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9 #include "terminal.h" |
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10 |
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11 pid_t child; |
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12 |
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13 void cleanup_terminal() |
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14 { |
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15 kill(child, SIGKILL); |
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16 unlink(INPUT_PATH); |
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17 unlink(OUTPUT_PATH); |
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18 } |
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19 |
832
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
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794
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20 static char init_done; |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
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21 |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
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22 void force_no_terminal() |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
794
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23 { |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
794
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24 init_done = 1; |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
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25 } |
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
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26 |
794
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27 void init_terminal() |
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28 { |
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29 if (!init_done) { |
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30 if (!(isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))) { |
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31 #ifndef __APPLE__ |
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32 //check to see if x-terminal-emulator exists, just use xterm if it doesn't |
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33 char *term = system("which x-terminal-emulator > /dev/null") ? "xterm" : "x-terminal-emulator"; |
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34 #endif |
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35 //get rid of FIFO's if they already exist |
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36 unlink(INPUT_PATH); |
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37 unlink(OUTPUT_PATH); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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parents:
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38 //create FIFOs for talking to helper process in terminal app |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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39 mkfifo(INPUT_PATH, 0666); |
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parents:
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40 mkfifo(OUTPUT_PATH, 0666); |
832
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
794
diff
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41 |
794
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42 //close existing file descriptors |
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43 close(STDIN_FILENO); |
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44 close(STDOUT_FILENO); |
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parents:
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45 close(STDERR_FILENO); |
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46 |
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47 child = fork(); |
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48 if (child == -1) { |
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49 //error, oh well |
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50 warning("Failed to fork for terminal spawn"); |
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51 } else if (!child) { |
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52 //child process, exec our terminal emulator |
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53 #ifdef __APPLE__ |
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54 execlp("open", "open", "./termhelper", NULL); |
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55 #else |
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56 execlp(term, term, "-title", "BlastEm Debugger", "-e", "./termhelper", NULL); |
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57 #endif |
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58 } else { |
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59 //connect to the FIFOs, these will block so order is important |
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60 open(INPUT_PATH, O_RDONLY); |
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61 open(OUTPUT_PATH, O_WRONLY); |
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62 atexit(cleanup_terminal); |
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63 if (-1 == dup(STDOUT_FILENO)) { |
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64 fatal_error("failed to dup STDOUT to STDERR after terminal fork"); |
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65 } |
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66 } |
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67 } |
832
0433fdd9ba66
Added a command line option to force BlastEm to not open a new terminal even if it detects that stdin/out are not terminals
Michael Pavone <pavone@retrodev.com>
parents:
794
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68 |
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parents:
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69 init_done = 1; |
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70 } |
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71 } |