Re: [Gnuplot-info] Fwd: Memory overload in real time plotting

[tryfonaration <far...@gm...>]

The memory growth is observed in the program not gnuplot. This is the code
that is being called periodically every few seconds. extents_plot_handler =
gnuplot_init(); is only called once at some previous point.

int i;

	char * cmd_header = "plot \"-\" matrix with image\n";
	char * cmd = malloc(
			sizeof(char)
					* ((4 * extents_map_size)
							+ (int) (extents_map_size / pixels_width) + 30));
	strcpy(cmd, "");
	cmd = concat(cmd, cmd_header);
	for (i = 1; i <= extents_map_size; i++) {
		cmd = concat(cmd, addr_space_extents_array[i - 1]);
		if (i % pixels_width == 0) {
			cmd = concat(cmd, "\n");
		}
	}
	if (extents_map_size % pixels_width > 0) {
		for (i = extents_map_size;
				i
						< (extents_map_size + pixels_width
								- (extents_map_size % pixels_width)); i++) {
			cmd = concat(cmd, "0 ");
		}
	}
	if (extents_map_size % pixels_width > 0)
		cmd = concat(cmd, "\ne\ne");
	else
		cmd = concat(cmd, "e\ne");
	/*FILE *file;
	 char file_name[20];
	 sprintf(file_name, "temp_data%d.txt", temp_counter++);
	 file = fopen(file_name, "a+");
	 fprintf(file, "%s", cmd);
	 fclose(file);*/
	fprintf(stderr,"extents_plot_handler size:
%d\n",sizeof(extents_plot_handler));
	fprintf(stderr,"extents_plot_handler file size:
%d\n",sizeof(extents_plot_handler->gnucmd));
	fprintf(stderr,"extents_plot_handler active plots:
%d\n",extents_plot_handler->nplots);
	fprintf(stderr,"extents_plot_handler temporary files:
%d\n",extents_plot_handler->ntmp);
	fprintf(stderr,"extents_plot_handler temp filename table size:
%d\n",sizeof(extents_plot_handler->tmp_filename_tbl));
	gnuplot_cmd(extents_plot_handler, cmd);
	free(cmd);



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