1 #include <linux/kernel.h>
10 int perf_use_color_default = -1;
12 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
15 if (!strcasecmp(value, "never"))
17 if (!strcasecmp(value, "always"))
19 if (!strcasecmp(value, "auto"))
23 /* Missing or explicit false to turn off colorization */
24 if (!perf_config_bool(var, value))
27 /* any normal truth value defaults to 'auto' */
29 if (stdout_is_tty < 0)
30 stdout_is_tty = isatty(1);
31 if (stdout_is_tty || pager_in_use()) {
32 char *term = getenv("TERM");
33 if (term && strcmp(term, "dumb"))
39 int perf_color_default_config(const char *var, const char *value,
40 void *cb __maybe_unused)
42 if (!strcmp(var, "color.ui")) {
43 perf_use_color_default = perf_config_colorbool(var, value, -1);
50 static int __color_vsnprintf(char *bf, size_t size, const char *color,
51 const char *fmt, va_list args, const char *trail)
58 if (perf_use_color_default < 0) {
59 if (isatty(1) || pager_in_use())
60 perf_use_color_default = 1;
62 perf_use_color_default = 0;
65 if (perf_use_color_default && *color)
66 r += scnprintf(bf, size, "%s", color);
67 r += vscnprintf(bf + r, size - r, fmt, args);
68 if (perf_use_color_default && *color)
69 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
71 r += scnprintf(bf + r, size - r, "%s", trail);
75 /* Colors are not included in return value */
76 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
84 if (perf_use_color_default < 0) {
85 if (isatty(fileno(fp)) || pager_in_use())
86 perf_use_color_default = 1;
88 perf_use_color_default = 0;
91 if (perf_use_color_default && *color)
92 fprintf(fp, "%s", color);
93 r += vfprintf(fp, fmt, args);
94 if (perf_use_color_default && *color)
95 fprintf(fp, "%s", PERF_COLOR_RESET);
99 int color_vsnprintf(char *bf, size_t size, const char *color,
100 const char *fmt, va_list args)
102 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
105 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
107 return __color_vfprintf(fp, color, fmt, args);
110 int color_snprintf(char *bf, size_t size, const char *color,
111 const char *fmt, ...)
117 r = color_vsnprintf(bf, size, color, fmt, args);
122 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
128 r = color_vfprintf(fp, color, fmt, args);
134 * This function splits the buffer by newlines and colors the lines individually.
136 * Returns 0 on success.
138 int color_fwrite_lines(FILE *fp, const char *color,
139 size_t count, const char *buf)
142 return fwrite(buf, count, 1, fp) != 1;
145 char *p = memchr(buf, '\n', count);
147 if (p != buf && (fputs(color, fp) < 0 ||
148 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
149 fputs(PERF_COLOR_RESET, fp) < 0))
153 if (fputc('\n', fp) < 0)
155 count -= p + 1 - buf;
161 const char *get_percent_color(double percent)
163 const char *color = PERF_COLOR_NORMAL;
166 * We color high-overhead entries in red, mid-overhead
167 * entries in green - and keep the low overhead places
170 if (fabs(percent) >= MIN_RED)
171 color = PERF_COLOR_RED;
173 if (fabs(percent) > MIN_GREEN)
174 color = PERF_COLOR_GREEN;
179 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
184 color = get_percent_color(percent);
185 r = color_fprintf(fp, color, fmt, percent);
190 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
192 const char *color = get_percent_color(value);
193 return color_snprintf(bf, size, color, fmt, value);
196 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
202 percent = va_arg(args, double);
204 return value_color_snprintf(bf, size, fmt, percent);
207 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
215 len = va_arg(args, int);
216 percent = va_arg(args, double);
219 color = get_percent_color(percent);
220 return color_snprintf(bf, size, color, fmt, len, percent);