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2a8939b2d8
In the next commit, we want to teach Git's test suite to optionally output test results in JUnit-style .xml files. These files contain information about the time spent. So we need a way to measure time. While we could use `date +%s` for that, this will give us only seconds, i.e. very coarse-grained timings. GNU `date` supports `date +%s.%N` (i.e. nanosecond-precision output), but there is no equivalent in BSD `date` (read: on macOS, we would not be able to obtain precise timings). So let's introduce `test-tool date getnanos`, with an optional start time, that outputs preciser values. Granted, it is a bit pointless to try measuring times accurately in shell scripts, certainly to nanosecond precision. But it is better than second-granularity. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
#include "test-tool.h"
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#include "cache.h"
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static const char *usage_msg = "\n"
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" test-tool date relative [time_t]...\n"
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" test-tool date show:<format> [time_t]...\n"
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" test-tool date parse [date]...\n"
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" test-tool date approxidate [date]...\n"
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" test-tool date timestamp [date]...\n"
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" test-tool date getnanos [start-nanos]\n"
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" test-tool date is64bit\n"
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" test-tool date time_t-is64bit\n";
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static void show_relative_dates(const char **argv, struct timeval *now)
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{
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struct strbuf buf = STRBUF_INIT;
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for (; *argv; argv++) {
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time_t t = atoi(*argv);
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show_date_relative(t, 0, now, &buf);
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printf("%s -> %s\n", *argv, buf.buf);
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}
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strbuf_release(&buf);
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}
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static void show_dates(const char **argv, const char *format)
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{
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struct date_mode mode;
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parse_date_format(format, &mode);
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for (; *argv; argv++) {
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char *arg;
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timestamp_t t;
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int tz;
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/*
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* Do not use our normal timestamp parsing here, as the point
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* is to test the formatting code in isolation.
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*/
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t = parse_timestamp(*argv, &arg, 10);
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while (*arg == ' ')
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arg++;
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tz = atoi(arg);
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printf("%s -> %s\n", *argv, show_date(t, tz, &mode));
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}
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}
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static void parse_dates(const char **argv, struct timeval *now)
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{
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struct strbuf result = STRBUF_INIT;
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for (; *argv; argv++) {
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timestamp_t t;
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int tz;
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strbuf_reset(&result);
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parse_date(*argv, &result);
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if (sscanf(result.buf, "%"PRItime" %d", &t, &tz) == 2)
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printf("%s -> %s\n",
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*argv, show_date(t, tz, DATE_MODE(ISO8601)));
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else
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printf("%s -> bad\n", *argv);
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}
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strbuf_release(&result);
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}
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static void parse_approxidate(const char **argv, struct timeval *now)
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{
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for (; *argv; argv++) {
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timestamp_t t;
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t = approxidate_relative(*argv, now);
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printf("%s -> %s\n", *argv, show_date(t, 0, DATE_MODE(ISO8601)));
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}
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}
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static void parse_approx_timestamp(const char **argv, struct timeval *now)
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{
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for (; *argv; argv++) {
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timestamp_t t;
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t = approxidate_relative(*argv, now);
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printf("%s -> %"PRItime"\n", *argv, t);
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}
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}
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static void getnanos(const char **argv, struct timeval *now)
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{
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double seconds = getnanotime() / 1.0e9;
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if (*argv)
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seconds -= strtod(*argv, NULL);
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printf("%lf\n", seconds);
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}
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int cmd__date(int argc, const char **argv)
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{
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struct timeval now;
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const char *x;
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x = getenv("TEST_DATE_NOW");
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if (x) {
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now.tv_sec = atoi(x);
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now.tv_usec = 0;
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}
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else
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gettimeofday(&now, NULL);
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argv++;
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if (!*argv)
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usage(usage_msg);
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if (!strcmp(*argv, "relative"))
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show_relative_dates(argv+1, &now);
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else if (skip_prefix(*argv, "show:", &x))
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show_dates(argv+1, x);
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else if (!strcmp(*argv, "parse"))
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parse_dates(argv+1, &now);
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else if (!strcmp(*argv, "approxidate"))
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parse_approxidate(argv+1, &now);
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else if (!strcmp(*argv, "timestamp"))
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parse_approx_timestamp(argv+1, &now);
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else if (!strcmp(*argv, "getnanos"))
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getnanos(argv+1, &now);
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else if (!strcmp(*argv, "is64bit"))
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return sizeof(timestamp_t) == 8 ? 0 : 1;
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else if (!strcmp(*argv, "time_t-is64bit"))
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return sizeof(time_t) == 8 ? 0 : 1;
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else
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usage(usage_msg);
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return 0;
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}
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