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 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
71 va_list args, const char *trail)
78 if (perf_use_color_default < 0) {
79 if (isatty(fileno(fp)) || pager_in_use())
80 perf_use_color_default = 1;
82 perf_use_color_default = 0;
85 if (perf_use_color_default && *color)
86 r += fprintf(fp, "%s", color);
87 r += vfprintf(fp, fmt, args);
88 if (perf_use_color_default && *color)
89 r += fprintf(fp, "%s", PERF_COLOR_RESET);
91 r += fprintf(fp, "%s", trail);
95 int color_vsnprintf(char *bf, size_t size, const char *color,
96 const char *fmt, va_list args)
98 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
101 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
103 return __color_vfprintf(fp, color, fmt, args, NULL);
106 int color_snprintf(char *bf, size_t size, const char *color,
107 const char *fmt, ...)
113 r = color_vsnprintf(bf, size, color, fmt, args);
118 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
124 r = color_vfprintf(fp, color, fmt, args);
129 int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
134 r = __color_vfprintf(fp, color, fmt, args, "\n");
140 * This function splits the buffer by newlines and colors the lines individually.
142 * Returns 0 on success.
144 int color_fwrite_lines(FILE *fp, const char *color,
145 size_t count, const char *buf)
148 return fwrite(buf, count, 1, fp) != 1;
151 char *p = memchr(buf, '\n', count);
153 if (p != buf && (fputs(color, fp) < 0 ||
154 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
155 fputs(PERF_COLOR_RESET, fp) < 0))
159 if (fputc('\n', fp) < 0)
161 count -= p + 1 - buf;
167 const char *get_percent_color(double percent)
169 const char *color = PERF_COLOR_NORMAL;
172 * We color high-overhead entries in red, mid-overhead
173 * entries in green - and keep the low overhead places
176 if (fabs(percent) >= MIN_RED)
177 color = PERF_COLOR_RED;
179 if (fabs(percent) > MIN_GREEN)
180 color = PERF_COLOR_GREEN;
185 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
190 color = get_percent_color(percent);
191 r = color_fprintf(fp, color, fmt, percent);
196 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
198 const char *color = get_percent_color(value);
199 return color_snprintf(bf, size, color, fmt, value);
202 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
208 percent = va_arg(args, double);
210 return value_color_snprintf(bf, size, fmt, percent);
213 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
221 len = va_arg(args, int);
222 percent = va_arg(args, double);
225 color = get_percent_color(percent);
226 return color_snprintf(bf, size, color, fmt, len, percent);