65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
#include "selfdrive/common/params.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static const char* const kUsage = "%s: read|write|read_block params_path key [value]\n";
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int main(int argc, const char* argv[]) {
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if (argc < 4) {
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printf(kUsage, argv[0]);
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return 0;
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}
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const char* params_path = argv[2];
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const char* key = argv[3];
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if (strcmp(argv[1], "read") == 0) {
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char* value;
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size_t value_size;
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int result = read_db_value(params_path, key, &value, &value_size);
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if (result >= 0) {
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fprintf(stdout, "Read %zu bytes: ", value_size);
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fwrite(value, 1, value_size, stdout);
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fprintf(stdout, "\n");
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free(value);
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} else {
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fprintf(stderr, "Error reading: %d\n", result);
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return -1;
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}
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} else if (strcmp(argv[1], "write") == 0) {
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if (argc < 5) {
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fprintf(stderr, "Error: write value required\n");
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return 1;
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}
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const char* value = argv[4];
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const size_t value_size = strlen(value);
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int result = write_db_value(params_path, key, value, value_size);
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if (result >= 0) {
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fprintf(stdout, "Wrote %s to %s\n", value, key);
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} else {
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fprintf(stderr, "Error writing: %d\n", result);
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return -1;
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}
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} else if (strcmp(argv[1], "read_block") == 0) {
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char* value;
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size_t value_size;
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read_db_value_blocking(params_path, key, &value, &value_size);
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fprintf(stdout, "Read %zu bytes: ", value_size);
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fwrite(value, 1, value_size, stdout);
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fprintf(stdout, "\n");
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free(value);
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} else {
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printf(kUsage, argv[0]);
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return 1;
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}
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return 0;
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}
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// BUILD:
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// $ gcc -I$HOME/one selfdrive/common/test_params.c selfdrive/common/params.c selfdrive/common/util.cc -o ./test_params
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// $ seq 0 100000 | xargs -P20 -I{} ./test_params write /data/params DongleId {} && sleep 0.1 &
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// $ while ./test_params read /data/params DongleId; do sleep 0.05; done
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