Cedric Roux
52cf61de97
Whenever the value T_BUFFER_MAX changes, the tracers had to be recompiled. The only reason why it was needed is because we used some fixed size buffers to read events. This commit removes this restriction. Also, with the basic simulator, this value T_BUFFER_MAX now comes with an #ifdef which would have required some special hackish-level tricks in the tracers, which is not good. Let's just allocate memory when needed.
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "utils.h"
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#include "../T_defs.h"
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void usage(void)
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{
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printf(
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"options:\n"
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" -i <input file> this option is mandatory\n"
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);
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exit(1);
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}
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#define ERR printf("ERROR: read file %s failed\n", input_filename)
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int main(int n, char **v)
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{
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char *input_filename = NULL;
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int i;
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FILE *in;
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for (i = 1; i < n; i++) {
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if (!strcmp(v[i], "-h") || !strcmp(v[i], "--help")) usage();
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if (!strcmp(v[i], "-i"))
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{ if (i > n-2) usage(); input_filename = v[++i]; continue; }
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usage();
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}
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if (input_filename == NULL) {
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printf("ERROR: provide an input file (-i)\n");
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exit(1);
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}
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in = fopen(input_filename, "r");
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if (in == NULL) { perror(input_filename); abort(); }
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OBUF ebuf = { osize: 0, omaxsize: 0, obuf: NULL };
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while (1) {
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int type;
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int32_t length;
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char *v;
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int vpos = 0;
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/* read event from file */
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if (fread(&length, 4, 1, in) != 1) break;
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if (ebuf.omaxsize < length) {
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ebuf.omaxsize = (length + 65535) & ~65535;
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ebuf.obuf = realloc(ebuf.obuf, ebuf.omaxsize);
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if (ebuf.obuf == NULL) { printf("out of memory\n"); exit(1); }
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}
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v = ebuf.obuf;
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memcpy(v+vpos, &length, 4);
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vpos += 4;
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#ifdef T_SEND_TIME
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if (length < sizeof(struct timespec)) { ERR; break; }
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if (fread(v+vpos, sizeof(struct timespec), 1, in) != 1) { ERR; break; }
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vpos += sizeof(struct timespec);
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length -= sizeof(struct timespec);
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#endif
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if (length < sizeof(int)) { ERR; break; }
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if (fread(&type, sizeof(int), 1, in) != 1) { ERR; break; }
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memcpy(v+vpos, &type, sizeof(int));
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vpos += sizeof(int);
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length -= sizeof(int);
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if (length) if (fread(v+vpos, length, 1, in) != 1) { ERR; break; }
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vpos += length;
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if (type == -1) {
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if (length < sizeof(int)) { ERR; break; }
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length -= sizeof(int);
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if (fwrite(v+vpos-length, length, 1, stdout) != 1) { ERR; break; }
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}
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/* TODO: parse all file? */
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if (type == -2) break;
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}
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fclose(in);
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return 0;
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}
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