Mercurial > repos > blastem
annotate termhelper.c @ 1651:9b8fe6729877
Fix headless mode
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 25 Dec 2018 11:40:00 -0800 |
parents | 792be135d3af |
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rev | line source |
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794
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
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1 #include <sys/types.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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2 #include <sys/stat.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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3 #include <fcntl.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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4 #include <unistd.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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5 #include <stdlib.h> |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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6 #include "terminal.h" |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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7 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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8 char buf[4096]; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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9 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
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10 void copy_data(int to, int from) |
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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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11 { |
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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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12 ssize_t bytes = read(from, buf, sizeof(buf)); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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13 while (bytes > 0) |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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14 { |
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Michael Pavone <pavone@retrodev.com>
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15 ssize_t written = write(to, buf, bytes); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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16 if (written == -1) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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17 exit(1); |
792be135d3af
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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18 } |
792be135d3af
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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19 bytes -= written; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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20 } |
792be135d3af
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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21 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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22 |
792be135d3af
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Michael Pavone <pavone@retrodev.com>
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23 int main(int argc, char **argv) |
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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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24 { |
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25 //these will block so order is important |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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26 int input_fd = open(INPUT_PATH, O_WRONLY); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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27 int output_fd = open(OUTPUT_PATH, O_RDONLY); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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28 fd_set read_fds; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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29 FD_ZERO(&read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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30 for (;;) |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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31 { |
792be135d3af
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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32 FD_SET(STDIN_FILENO, &read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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33 FD_SET(output_fd, &read_fds); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
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34 select(output_fd+1, &read_fds, NULL, NULL, NULL); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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35 |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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36 if (FD_ISSET(STDIN_FILENO, &read_fds)) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
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37 copy_data(input_fd, STDIN_FILENO); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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38 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
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39 if (FD_ISSET(output_fd, &read_fds)) { |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
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40 copy_data(STDOUT_FILENO, output_fd); |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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41 } |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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42 } |
792be135d3af
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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43 return 0; |
792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
Michael Pavone <pavone@retrodev.com>
parents:
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44 } |