![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
Newt has widespread availability and provides a rather simple API as can be seen by the size of this patch. The work needed to support it will benefit other frontends too. In this initial patch it just checks if the output is a tty, if not it falls back to the previous behaviour, also if newt-devel/libnewt-dev is not installed the previous behaviour is maintaned. Pressing enter on a symbol will annotate it, ESC in the annotation window will return to the report symbol list. More work will be done to remove the special casing in color_fprintf, stop using fmemopen/FILE in the printing of hist_entries, etc. Also the annotation doesn't need to be done via spawning "perf annotate" and then browsing its output, we can do better by calling directly the builtin-annotate.c functions, that would then be moved to tools/perf/util/annotate.c and shared with perf top, etc But lets go by baby steps, this patch already improves perf usability by allowing to quickly do annotations on symbols from the report screen and provides a first experimentation with libnewt/TUI integration of tools. Tested on RHEL5 and Fedora12 X86_64 and on Debian PARISC64 to browse a perf.data file collected on a Fedora12 x86_64 box. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1268349164-5822-5-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
280 lines
5.5 KiB
C
280 lines
5.5 KiB
C
#include "cache.h"
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#include "color.h"
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int perf_use_color_default = -1;
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static int parse_color(const char *name, int len)
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{
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static const char * const color_names[] = {
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"normal", "black", "red", "green", "yellow",
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"blue", "magenta", "cyan", "white"
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};
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char *end;
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int i;
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for (i = 0; i < (int)ARRAY_SIZE(color_names); i++) {
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const char *str = color_names[i];
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if (!strncasecmp(name, str, len) && !str[len])
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return i - 1;
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}
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i = strtol(name, &end, 10);
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if (end - name == len && i >= -1 && i <= 255)
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return i;
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return -2;
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}
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static int parse_attr(const char *name, int len)
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{
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static const int attr_values[] = { 1, 2, 4, 5, 7 };
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static const char * const attr_names[] = {
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"bold", "dim", "ul", "blink", "reverse"
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};
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
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const char *str = attr_names[i];
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if (!strncasecmp(name, str, len) && !str[len])
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return attr_values[i];
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}
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return -1;
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}
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void color_parse(const char *value, const char *var, char *dst)
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{
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color_parse_mem(value, strlen(value), var, dst);
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}
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void color_parse_mem(const char *value, int value_len, const char *var,
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char *dst)
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{
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const char *ptr = value;
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int len = value_len;
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int attr = -1;
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int fg = -2;
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int bg = -2;
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if (!strncasecmp(value, "reset", len)) {
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strcpy(dst, PERF_COLOR_RESET);
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return;
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}
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/* [fg [bg]] [attr] */
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while (len > 0) {
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const char *word = ptr;
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int val, wordlen = 0;
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while (len > 0 && !isspace(word[wordlen])) {
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wordlen++;
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len--;
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}
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ptr = word + wordlen;
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while (len > 0 && isspace(*ptr)) {
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ptr++;
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len--;
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}
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val = parse_color(word, wordlen);
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if (val >= -1) {
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if (fg == -2) {
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fg = val;
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continue;
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}
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if (bg == -2) {
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bg = val;
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continue;
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}
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goto bad;
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}
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val = parse_attr(word, wordlen);
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if (val < 0 || attr != -1)
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goto bad;
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attr = val;
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}
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if (attr >= 0 || fg >= 0 || bg >= 0) {
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int sep = 0;
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*dst++ = '\033';
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*dst++ = '[';
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if (attr >= 0) {
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*dst++ = '0' + attr;
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sep++;
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}
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if (fg >= 0) {
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if (sep++)
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*dst++ = ';';
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if (fg < 8) {
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*dst++ = '3';
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*dst++ = '0' + fg;
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} else {
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dst += sprintf(dst, "38;5;%d", fg);
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}
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}
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if (bg >= 0) {
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if (sep++)
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*dst++ = ';';
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if (bg < 8) {
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*dst++ = '4';
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*dst++ = '0' + bg;
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} else {
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dst += sprintf(dst, "48;5;%d", bg);
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}
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}
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*dst++ = 'm';
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}
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*dst = 0;
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return;
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bad:
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die("bad color value '%.*s' for variable '%s'", value_len, value, var);
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}
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int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
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{
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if (value) {
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if (!strcasecmp(value, "never"))
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return 0;
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if (!strcasecmp(value, "always"))
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return 1;
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if (!strcasecmp(value, "auto"))
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goto auto_color;
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}
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/* Missing or explicit false to turn off colorization */
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if (!perf_config_bool(var, value))
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return 0;
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/* any normal truth value defaults to 'auto' */
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auto_color:
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if (stdout_is_tty < 0)
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stdout_is_tty = isatty(1);
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if (stdout_is_tty || (pager_in_use() && pager_use_color)) {
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char *term = getenv("TERM");
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if (term && strcmp(term, "dumb"))
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return 1;
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}
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return 0;
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}
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int perf_color_default_config(const char *var, const char *value, void *cb)
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{
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if (!strcmp(var, "color.ui")) {
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perf_use_color_default = perf_config_colorbool(var, value, -1);
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return 0;
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}
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return perf_default_config(var, value, cb);
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}
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static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
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va_list args, const char *trail)
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{
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int r = 0;
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/*
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* Auto-detect:
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*/
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if (perf_use_color_default < 0) {
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if (isatty(1) || pager_in_use())
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perf_use_color_default = 1;
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else
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perf_use_color_default = 0;
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}
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if (perf_use_color_default && *color)
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r += fprintf(fp, "%s", color);
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r += vfprintf(fp, fmt, args);
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if (perf_use_color_default && *color)
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r += fprintf(fp, "%s", PERF_COLOR_RESET);
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if (trail)
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r += fprintf(fp, "%s", trail);
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return r;
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}
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int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
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{
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return __color_vfprintf(fp, color, fmt, args, NULL);
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}
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int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
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{
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va_list args;
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int r;
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va_start(args, fmt);
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if (use_browser)
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r = vfprintf(fp, fmt, args);
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else
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r = color_vfprintf(fp, color, fmt, args);
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va_end(args);
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return r;
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}
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int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
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{
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va_list args;
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int r;
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va_start(args, fmt);
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r = __color_vfprintf(fp, color, fmt, args, "\n");
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va_end(args);
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return r;
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}
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/*
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* This function splits the buffer by newlines and colors the lines individually.
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*
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* Returns 0 on success.
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*/
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int color_fwrite_lines(FILE *fp, const char *color,
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size_t count, const char *buf)
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{
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if (!*color)
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return fwrite(buf, count, 1, fp) != 1;
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while (count) {
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char *p = memchr(buf, '\n', count);
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if (p != buf && (fputs(color, fp) < 0 ||
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fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
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fputs(PERF_COLOR_RESET, fp) < 0))
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return -1;
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if (!p)
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return 0;
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if (fputc('\n', fp) < 0)
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return -1;
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count -= p + 1 - buf;
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buf = p + 1;
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}
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return 0;
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}
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const char *get_percent_color(double percent)
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{
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const char *color = PERF_COLOR_NORMAL;
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/*
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* We color high-overhead entries in red, mid-overhead
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* entries in green - and keep the low overhead places
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* normal:
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*/
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if (percent >= MIN_RED)
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color = PERF_COLOR_RED;
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else {
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if (percent > MIN_GREEN)
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color = PERF_COLOR_GREEN;
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}
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return color;
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}
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int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
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{
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int r;
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const char *color;
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color = get_percent_color(percent);
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r = color_fprintf(fp, color, fmt, percent);
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return r;
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}
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