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perf annotate browser: Allow toggling the visualization of source code lines

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Just press 'S' on any assembly line and the source code will be hidden
while the current line remains selected. Press 'S' again to show them
back.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-efmxm5etouebb7es0kkyqqwa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2011-10-14 12:31:21 -03:00
parent 250611cfb6
commit 0361fc25d5
1 changed files with 71 additions and 5 deletions
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76
tools/perf/util/ui/browsers/annotate.c
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@ -21,12 +21,16 @@ struct annotate_browser {
struct rb_root entries;
struct rb_node *curr_hot;
struct objdump_line *selection;
int nr_asm_entries;
int nr_entries;
bool hide_src_code;
};
struct objdump_line_rb_node {
struct rb_node rb_node;
double percent;
u32 idx;
int idx_asm;
};
static inline
@ -35,10 +39,22 @@ struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self)
return (struct objdump_line_rb_node *)(self + 1);
}
static bool objdump_line__filter(struct ui_browser *browser, void *entry)
{
struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
if (ab->hide_src_code) {
struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
return ol->offset == -1;
}
return false;
}
static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
{
struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
struct objdump_line *ol = rb_entry(entry, struct objdump_line, node);
struct objdump_line *ol = list_entry(entry, struct objdump_line, node);
bool current_entry = ui_browser__is_current_entry(self, row);
int width = self->width;
@ -168,6 +184,45 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser,
browser->curr_hot = rb_last(&browser->entries);
}
static bool annotate_browser__toggle_source(struct annotate_browser *browser)
{
struct objdump_line *ol;
struct objdump_line_rb_node *olrb;
off_t offset = browser->b.index - browser->b.top_idx;
browser->b.seek(&browser->b, offset, SEEK_CUR);
ol = list_entry(browser->b.top, struct objdump_line, node);
olrb = objdump_line__rb(ol);
if (browser->hide_src_code) {
if (olrb->idx_asm < offset)
offset = olrb->idx;
browser->b.nr_entries = browser->nr_entries;
browser->hide_src_code = false;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = olrb->idx - offset;
browser->b.index = olrb->idx;
} else {
if (olrb->idx_asm < 0) {
ui_helpline__puts("Only available for assembly lines.");
browser->b.seek(&browser->b, -offset, SEEK_CUR);
return false;
}
if (olrb->idx_asm < offset)
offset = olrb->idx_asm;
browser->b.nr_entries = browser->nr_asm_entries;
browser->hide_src_code = true;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = olrb->idx_asm - offset;
browser->b.index = olrb->idx_asm;
}
return true;
}
static int annotate_browser__run(struct annotate_browser *self, int evidx,
int nr_events, void(*timer)(void *arg),
void *arg, int delay_secs)
@ -175,11 +230,12 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
struct rb_node *nd = NULL;
struct map_symbol *ms = self->b.priv;
struct symbol *sym = ms->sym;
const char *help = "<-, ESC: exit, TAB/shift+TAB: cycle hottest lines, "
"H: Hottest, -> Line action, S -> Toggle source "
"code view";
int key;
if (ui_browser__show(&self->b, sym->name,
"<- or ESC: exit, TAB/shift+TAB: "
"cycle hottest lines, H: Hottest, -> Line action") < 0)
if (ui_browser__show(&self->b, sym->name, help) < 0)
return -1;
annotate_browser__calc_percent(self, evidx);
@ -234,6 +290,10 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
case 'H':
nd = self->curr_hot;
break;
case 'S':
if (annotate_browser__toggle_source(self))
ui_helpline__puts(help);
continue;
case NEWT_KEY_ENTER:
case NEWT_KEY_RIGHT:
if (self->selection == NULL) {
@ -324,6 +384,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
.refresh = ui_browser__list_head_refresh,
.seek = ui_browser__list_head_seek,
.write = annotate_browser__write,
.filter = objdump_line__filter,
.priv = &ms,
},
};
@ -351,9 +412,14 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
if (browser.b.width < line_len)
browser.b.width = line_len;
rbpos = objdump_line__rb(pos);
rbpos->idx = browser.b.nr_entries++;
rbpos->idx = browser.nr_entries++;
if (pos->offset != -1)
rbpos->idx_asm = browser.nr_asm_entries++;
else
rbpos->idx_asm = -1;
}
browser.b.nr_entries = browser.nr_entries;
browser.b.entries = &notes->src->source,
browser.b.width += 18; /* Percentage */
ret = annotate_browser__run(&browser, evidx, nr_events,