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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/util/color.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/util/color.c')
-rw-r--r-- | tools/perf/util/color.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c new file mode 100644 index 0000000000..bffbdd216a --- /dev/null +++ b/tools/perf/util/color.c @@ -0,0 +1,184 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kernel.h> +#include <subcmd/pager.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include "color.h" +#include <math.h> +#include <unistd.h> + +int perf_use_color_default = -1; + +static int __color_vsnprintf(char *bf, size_t size, const char *color, + const char *fmt, va_list args, const char *trail) +{ + int r = 0; + + /* + * Auto-detect: + */ + if (perf_use_color_default < 0) { + if (isatty(1) || pager_in_use()) + perf_use_color_default = 1; + else + perf_use_color_default = 0; + } + + if (perf_use_color_default && *color) + r += scnprintf(bf, size, "%s", color); + r += vscnprintf(bf + r, size - r, fmt, args); + if (perf_use_color_default && *color) + r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET); + if (trail) + r += scnprintf(bf + r, size - r, "%s", trail); + return r; +} + +/* Colors are not included in return value */ +static int __color_vfprintf(FILE *fp, const char *color, const char *fmt, + va_list args) +{ + int r = 0; + + /* + * Auto-detect: + */ + if (perf_use_color_default < 0) { + if (isatty(fileno(fp)) || pager_in_use()) + perf_use_color_default = 1; + else + perf_use_color_default = 0; + } + + if (perf_use_color_default && *color) + fprintf(fp, "%s", color); + r += vfprintf(fp, fmt, args); + if (perf_use_color_default && *color) + fprintf(fp, "%s", PERF_COLOR_RESET); + return r; +} + +int color_vsnprintf(char *bf, size_t size, const char *color, + const char *fmt, va_list args) +{ + return __color_vsnprintf(bf, size, color, fmt, args, NULL); +} + +int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args) +{ + return __color_vfprintf(fp, color, fmt, args); +} + +int color_snprintf(char *bf, size_t size, const char *color, + const char *fmt, ...) +{ + va_list args; + int r; + + va_start(args, fmt); + r = color_vsnprintf(bf, size, color, fmt, args); + va_end(args); + return r; +} + +int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) +{ + va_list args; + int r; + + va_start(args, fmt); + r = color_vfprintf(fp, color, fmt, args); + va_end(args); + return r; +} + +/* + * This function splits the buffer by newlines and colors the lines individually. + * + * Returns 0 on success. + */ +int color_fwrite_lines(FILE *fp, const char *color, + size_t count, const char *buf) +{ + if (!*color) + return fwrite(buf, count, 1, fp) != 1; + + while (count) { + char *p = memchr(buf, '\n', count); + + if (p != buf && (fputs(color, fp) < 0 || + fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 || + fputs(PERF_COLOR_RESET, fp) < 0)) + return -1; + if (!p) + return 0; + if (fputc('\n', fp) < 0) + return -1; + count -= p + 1 - buf; + buf = p + 1; + } + return 0; +} + +const char *get_percent_color(double percent) +{ + const char *color = PERF_COLOR_NORMAL; + + /* + * We color high-overhead entries in red, mid-overhead + * entries in green - and keep the low overhead places + * normal: + */ + if (fabs(percent) >= MIN_RED) + color = PERF_COLOR_RED; + else { + if (fabs(percent) > MIN_GREEN) + color = PERF_COLOR_GREEN; + } + return color; +} + +int percent_color_fprintf(FILE *fp, const char *fmt, double percent) +{ + int r; + const char *color; + + color = get_percent_color(percent); + r = color_fprintf(fp, color, fmt, percent); + + return r; +} + +int value_color_snprintf(char *bf, size_t size, const char *fmt, double value) +{ + const char *color = get_percent_color(value); + return color_snprintf(bf, size, color, fmt, value); +} + +int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...) +{ + va_list args; + double percent; + + va_start(args, fmt); + percent = va_arg(args, double); + va_end(args); + return value_color_snprintf(bf, size, fmt, percent); +} + +int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...) +{ + va_list args; + int len; + double percent; + const char *color; + + va_start(args, fmt); + len = va_arg(args, int); + percent = va_arg(args, double); + va_end(args); + + color = get_percent_color(percent); + return color_snprintf(bf, size, color, fmt, len, percent); +} |