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OpenCloudOS-Kernel
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perf ui: Introduce ui_browser->seek to support multiple list structures 

So that we can use the ui_browser on things like an rb_tree, etc.

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-06-21 13:36:20 -03:00
parent 8c694d2559
commit 46b0a07a45
1 changed files with 43 additions and 26 deletions
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69
tools/perf/util/newt.c
View File

@ -267,9 +267,42 @@ struct ui_browser {
void *first_visible_entry, *entries;
u16 top, left, width, height;
void *priv;
void (*seek)(struct ui_browser *self,
off_t offset, int whence);
u32 nr_entries;
};
static void ui_browser__list_head_seek(struct ui_browser *self,
off_t offset, int whence)
{
struct list_head *head = self->entries;
struct list_head *pos;
switch (whence) {
case SEEK_SET:
pos = head->next;
break;
case SEEK_CUR:
pos = self->first_visible_entry;
break;
case SEEK_END:
pos = head->prev;
break;
default:
return;
}
if (offset > 0) {
while (offset-- != 0)
pos = pos->next;
} else {
while (offset++ != 0)
pos = pos->prev;
}
self->first_visible_entry = pos;
}
static bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
{
return (self->first_visible_entry_idx + row) == self->index;
@ -292,7 +325,7 @@ static void ui_browser__refresh_dimensions(struct ui_browser *self)
static void ui_browser__reset_index(struct ui_browser *self)
{
self->index = self->first_visible_entry_idx = 0;
self->first_visible_entry = NULL;
self->seek(self, 0, SEEK_SET);
}
static int objdump_line__show(struct objdump_line *self, struct list_head *head,
@ -408,7 +441,7 @@ static int ui_browser__run(struct ui_browser *self, const char *title,
newtFormAddComponent(self->form, self->sb);
while (1) {
unsigned int offset;
off_t offset;
newtFormRun(self->form, es);
@ -422,9 +455,8 @@ static int ui_browser__run(struct ui_browser *self, const char *title,
break;
++self->index;
if (self->index == self->first_visible_entry_idx + self->height) {
struct list_head *pos = self->first_visible_entry;
++self->first_visible_entry_idx;
self->first_visible_entry = pos->next;
self->seek(self, +1, SEEK_CUR);
}
break;
case NEWT_KEY_UP:
@ -432,9 +464,8 @@ static int ui_browser__run(struct ui_browser *self, const char *title,
break;
--self->index;
if (self->index < self->first_visible_entry_idx) {
struct list_head *pos = self->first_visible_entry;
--self->first_visible_entry_idx;
self->first_visible_entry = pos->prev;
self->seek(self, -1, SEEK_CUR);
}
break;
case NEWT_KEY_PGDN:
@ -447,12 +478,7 @@ static int ui_browser__run(struct ui_browser *self, const char *title,
offset = self->nr_entries - 1 - self->index;
self->index += offset;
self->first_visible_entry_idx += offset;
while (offset--) {
struct list_head *pos = self->first_visible_entry;
self->first_visible_entry = pos->next;
}
self->seek(self, +offset, SEEK_CUR);
break;
case NEWT_KEY_PGUP:
if (self->first_visible_entry_idx == 0)
@ -465,29 +491,19 @@ static int ui_browser__run(struct ui_browser *self, const char *title,
self->index -= offset;
self->first_visible_entry_idx -= offset;
while (offset--) {
struct list_head *pos = self->first_visible_entry;
self->first_visible_entry = pos->prev;
}
self->seek(self, -offset, SEEK_CUR);
break;
case NEWT_KEY_HOME:
ui_browser__reset_index(self);
break;
case NEWT_KEY_END: {
struct list_head *head = self->entries;
case NEWT_KEY_END:
offset = self->height - 1;
if (offset > self->nr_entries)
offset = self->nr_entries;
self->index = self->first_visible_entry_idx = self->nr_entries - 1 - offset;
self->first_visible_entry = head->prev;
while (offset-- != 0) {
struct list_head *pos = self->first_visible_entry;
self->first_visible_entry = pos->prev;
}
}
self->seek(self, -offset, SEEK_END);
break;
case NEWT_KEY_RIGHT:
case NEWT_KEY_LEFT:
@ -706,7 +722,8 @@ int hist_entry__tui_annotate(struct hist_entry *self)
ui_helpline__push("Press <- or ESC to exit");
memset(&browser, 0, sizeof(browser));
browser.entries = &head;
browser.entries = &head;
browser.seek = ui_browser__list_head_seek;
browser.priv = self;
list_for_each_entry(pos, &head, node) {
size_t line_len = strlen(pos->line);