1 #include <linux/kernel.h>
6 int perf_use_color_default = -1;
8 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
11 if (!strcasecmp(value, "never"))
13 if (!strcasecmp(value, "always"))
15 if (!strcasecmp(value, "auto"))
19 /* Missing or explicit false to turn off colorization */
20 if (!perf_config_bool(var, value))
23 /* any normal truth value defaults to 'auto' */
25 if (stdout_is_tty < 0)
26 stdout_is_tty = isatty(1);
27 if (stdout_is_tty || (pager_in_use() && pager_use_color)) {
28 char *term = getenv("TERM");
29 if (term && strcmp(term, "dumb"))
35 int perf_color_default_config(const char *var, const char *value, void *cb)
37 if (!strcmp(var, "color.ui")) {
38 perf_use_color_default = perf_config_colorbool(var, value, -1);
42 return perf_default_config(var, value, cb);
45 static int __color_vsnprintf(char *bf, size_t size, const char *color,
46 const char *fmt, va_list args, const char *trail)
53 if (perf_use_color_default < 0) {
54 if (isatty(1) || pager_in_use())
55 perf_use_color_default = 1;
57 perf_use_color_default = 0;
60 if (perf_use_color_default && *color)
61 r += scnprintf(bf, size, "%s", color);
62 r += vscnprintf(bf + r, size - r, fmt, args);
63 if (perf_use_color_default && *color)
64 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
66 r += scnprintf(bf + r, size - r, "%s", trail);
70 /* Colors are not included in return value */
71 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
79 if (perf_use_color_default < 0) {
80 if (isatty(fileno(fp)) || pager_in_use())
81 perf_use_color_default = 1;
83 perf_use_color_default = 0;
86 if (perf_use_color_default && *color)
87 fprintf(fp, "%s", color);
88 r += vfprintf(fp, fmt, args);
89 if (perf_use_color_default && *color)
90 fprintf(fp, "%s", PERF_COLOR_RESET);
94 int color_vsnprintf(char *bf, size_t size, const char *color,
95 const char *fmt, va_list args)
97 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
100 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
102 return __color_vfprintf(fp, color, fmt, args);
105 int color_snprintf(char *bf, size_t size, const char *color,
106 const char *fmt, ...)
112 r = color_vsnprintf(bf, size, color, fmt, args);
117 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
123 r = color_vfprintf(fp, color, fmt, args);
129 * This function splits the buffer by newlines and colors the lines individually.
131 * Returns 0 on success.
133 int color_fwrite_lines(FILE *fp, const char *color,
134 size_t count, const char *buf)
137 return fwrite(buf, count, 1, fp) != 1;
140 char *p = memchr(buf, '\n', count);
142 if (p != buf && (fputs(color, fp) < 0 ||
143 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
144 fputs(PERF_COLOR_RESET, fp) < 0))
148 if (fputc('\n', fp) < 0)
150 count -= p + 1 - buf;
156 const char *get_percent_color(double percent)
158 const char *color = PERF_COLOR_NORMAL;
161 * We color high-overhead entries in red, mid-overhead
162 * entries in green - and keep the low overhead places
165 if (fabs(percent) >= MIN_RED)
166 color = PERF_COLOR_RED;
168 if (fabs(percent) > MIN_GREEN)
169 color = PERF_COLOR_GREEN;
174 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
179 color = get_percent_color(percent);
180 r = color_fprintf(fp, color, fmt, percent);
185 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
187 const char *color = get_percent_color(value);
188 return color_snprintf(bf, size, color, fmt, value);
191 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
197 percent = va_arg(args, double);
199 return value_color_snprintf(bf, size, fmt, percent);
202 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
210 len = va_arg(args, int);
211 percent = va_arg(args, double);
214 color = get_percent_color(percent);
215 return color_snprintf(bf, size, color, fmt, len, percent);