4419de9164
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. Note that this might not actually give us nanosecond precision on some platforms, but it will give us as precise information as possible, without the portability issues of shell commands. 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> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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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