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polybar
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fix(font_manager): Memory leak

This commit is contained in:
Michael Carlberg 2016-12-14 05:13:59 +01:00
parent 80a00bd596
commit 7d07812fa6
4 changed files with 113 additions and 92 deletions
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49
include/x11/fonts.hpp
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@ -13,29 +13,25 @@ POLYBAR_NS
class connection;
class logger;
#define XFT_MAXCHARS (1 << 16)
extern array<char, XFT_MAXCHARS> xft_widths;
extern array<wchar_t, XFT_MAXCHARS> xft_chars;
struct fonttype {
fonttype() {}
XftFont* xft;
xcb_font_t ptr;
int offset_y = 0;
int ascent = 0;
int descent = 0;
int height = 0;
int width = 0;
uint16_t char_max = 0;
uint16_t char_min = 0;
vector<xcb_charinfo_t> width_lut;
explicit fonttype() = default;
XftFont* xft{nullptr};
xcb_font_t ptr{XCB_NONE};
int offset_y{0};
int ascent{0};
int descent{0};
int height{0};
int width{0};
uint16_t char_max{0};
uint16_t char_min{0};
vector<xcb_charinfo_t> width_lut{};
};
struct fonttype_deleter {
void operator()(fonttype* f);
};
using font_t = unique_ptr<fonttype, fonttype_deleter>;
using fonttype_pointer = unique_ptr<fonttype, fonttype_deleter>;
class font_manager {
public:
@ -49,22 +45,23 @@ class font_manager {
void set_preferred_font(int8_t index);
font_t& match_char(uint16_t chr);
uint8_t char_width(font_t& font, uint16_t chr);
fonttype_pointer& match_char(uint16_t chr);
uint8_t char_width(fonttype_pointer& font, uint16_t chr);
XftColor xftcolor();
XftColor* xftcolor();
XftDraw* xftdraw();
XftDraw* create_xftdraw(xcb_pixmap_t pm, xcb_colormap_t cm);
void create_xftdraw(xcb_pixmap_t pm);
void destroy_xftdraw();
void allocate_color(uint32_t color, bool initial_alloc = false);
void allocate_color(XRenderColor color, bool initial_alloc = false);
void allocate_color(uint32_t color);
void allocate_color(XRenderColor color);
void set_gcontext_font(xcb_gcontext_t gc, xcb_font_t font);
protected:
bool open_xcb_font(font_t& fontptr, string fontname);
bool has_glyph(font_t& font, uint16_t chr);
bool open_xcb_font(fonttype_pointer& fontptr, string fontname);
bool has_glyph(fonttype_pointer& font, uint16_t chr);
private:
connection& m_connection;
@ -74,10 +71,10 @@ class font_manager {
Visual* m_visual{nullptr};
Colormap m_colormap{};
std::map<uint8_t, font_t> m_fonts;
std::map<uint8_t, fonttype_pointer> m_fonts;
int8_t m_fontindex{DEFAULT_FONT_INDEX};
XftColor m_xftcolor{};
XftColor* m_xftcolor{nullptr};
XftDraw* m_xftdraw{nullptr};
};

5
src/CMakeLists.txt
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@ -49,14 +49,13 @@ find_package(X11_XCB REQUIRED)
find_package(PkgConfig)
pkg_check_modules(FONTCONFIG REQUIRED fontconfig)
set(APP_LIBRARIES ${APP_LIBRARIES} ${BOOST_LIBRARIES})
set(APP_LIBRARIES ${APP_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
set(APP_LIBRARIES ${APP_LIBRARIES} ${X11_Xft_LIB})
set(APP_LIBRARIES ${APP_LIBRARIES} ${FONTCONFIG_LIBRARIES})
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${BOOST_INCLUDE_DIR})
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${Boost_INCLUDE_DIR})
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${FONTCONFIG_INCLUDE_DIRS})
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PROJECT_SOURCE_DIR}/include)
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PROJECT_SOURCE_DIR}/lib/boost/include)
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PROJECT_SOURCE_DIR}/lib/concurrentqueue/include)
set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${CMAKE_CURRENT_BINARY_DIR})

14
src/components/renderer.cpp
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@ -3,8 +3,8 @@
#include "components/types.hpp"
#include "errors.hpp"
#include "events/signal.hpp"
#include "events/signal_emitter.hpp"
#include "events/signal.hpp"
#include "events/signal_emitter.hpp"
#include "x11/connection.hpp"
#include "x11/draw.hpp"
#include "x11/fonts.hpp"
@ -137,7 +137,7 @@ renderer::renderer(connection& conn, signal_emitter& emitter, const logger& logg
if (!fonts_loaded && !m_fontmanager->load("fixed")) {
throw application_error("Unable to load fonts");
}
m_fontmanager->allocate_color(m_bar.foreground, true);
m_fontmanager->allocate_color(m_bar.foreground);
}
}
@ -171,7 +171,7 @@ void renderer::begin() {
m_attributes = 0;
m_actions.clear();
m_fontmanager->create_xftdraw(m_pixmap, m_colormap);
m_fontmanager->create_xftdraw(m_pixmap);
}
/**
@ -368,8 +368,7 @@ void renderer::draw_character(uint16_t character) {
auto y = m_rect.height / 2 + font->height / 2 - font->descent + font->offset_y;
if (font->xft != nullptr) {
auto color = m_fontmanager->xftcolor();
XftDrawString16(m_fontmanager->xftdraw(), &color, font->xft, x, y, &character, 1);
XftDrawString16(m_fontmanager->xftdraw(), m_fontmanager->xftcolor(), font->xft, x, y, &character, 1);
} else {
uint16_t ucs = ((character >> 8) | (character << 8));
draw_util::xcb_poly_text_16_patched(m_connection, m_pixmap, m_gcontexts.at(gc::FG), x, y, 1, &ucs);
@ -409,9 +408,8 @@ void renderer::draw_textstring(const char* text, size_t len) {
auto y = m_rect.height / 2 + font->height / 2 - font->descent + font->offset_y;
if (font->xft != nullptr) {
auto color = m_fontmanager->xftcolor();
const FcChar16* drawchars = static_cast<const FcChar16*>(chars.data());
XftDrawString16(m_fontmanager->xftdraw(), &color, font->xft, x, y, drawchars, chars.size());
XftDrawString16(m_fontmanager->xftdraw(), m_fontmanager->xftcolor(), font->xft, x, y,
static_cast<uint16_t*>(chars.data()), chars.size());
} else {
for (unsigned short& i : chars) {
i = ((i >> 8) | (i << 8));

137
src/x11/fonts.cpp
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@ -1,6 +1,7 @@
#include <X11/Xlib-xcb.h>
#include "components/logger.hpp"
#include "errors.hpp"
#include "utils/color.hpp"
#include "utils/factory.hpp"
#include "utils/memory.hpp"
@ -11,6 +12,11 @@
POLYBAR_NS
#define XFT_MAXCHARS (1 << 16)
array<char, XFT_MAXCHARS> g_xft_widths;
array<wchar_t, XFT_MAXCHARS> g_xft_chars;
/**
* Create instance
*/
@ -18,27 +24,34 @@ font_manager::make_type font_manager::make() {
return factory_util::unique<font_manager>(connection::make(), logger::make());
}
array<char, XFT_MAXCHARS> xft_widths;
array<wchar_t, XFT_MAXCHARS> xft_chars;
void fonttype_deleter::operator()(fonttype* f) {
if (f->xft != nullptr) {
XftFontClose(xlib::get_display(), f->xft);
} else {
xcb_close_font(xutils::get_connection(), f->ptr);
free(f->xft);
}
if (f->ptr != XCB_NONE) {
connection::make().close_font(f->ptr);
}
delete f;
}
font_manager::font_manager(connection& conn, const logger& logger) : m_connection(conn), m_logger(logger) {
m_display = xlib::get_display();
if ((m_display = xlib::get_display()) == nullptr) {
throw application_error("Failed to get X display");
}
m_visual = xlib::get_visual(conn.default_screen());
m_colormap = xlib::create_colormap(conn.default_screen());
}
font_manager::~font_manager() {
XftColorFree(m_display, m_visual, m_colormap, &m_xftcolor);
XFreeColormap(m_display, m_colormap);
m_fonts.clear();
if (m_display != nullptr) {
if (m_xftcolor != nullptr) {
XftColorFree(m_display, m_visual, m_colormap, m_xftcolor);
free(m_xftcolor);
}
destroy_xftdraw();
XFreeColormap(m_display, m_colormap);
}
}
bool font_manager::load(const string& name, int8_t fontindex, int8_t offset_y) {
@ -52,23 +65,37 @@ bool font_manager::load(const string& name, int8_t fontindex, int8_t offset_y) {
m_logger.trace("font_manager: Add font '%s' to index '%i'", name, fontindex);
}
m_fonts.emplace(make_pair(fontindex, font_t{new fonttype(), fonttype_deleter{}}));
m_fonts[fontindex]->offset_y = offset_y;
m_fonts[fontindex]->ptr = 0;
m_fonts[fontindex]->xft = nullptr;
fonttype_pointer f{new fonttype_pointer::element_type{}, fonttype_deleter{}};
f->offset_y = offset_y;
if (open_xcb_font(m_fonts[fontindex], name)) {
m_logger.trace("font_manager: Successfully loaded X font '%s'", name);
} else if ((m_fonts[fontindex]->xft = XftFontOpenName(m_display, 0, name.c_str())) != nullptr) {
m_fonts[fontindex]->ptr = 0;
m_fonts[fontindex]->ascent = m_fonts[fontindex]->xft->ascent;
m_fonts[fontindex]->descent = m_fonts[fontindex]->xft->descent;
m_fonts[fontindex]->height = m_fonts[fontindex]->ascent + m_fonts[fontindex]->descent;
m_logger.trace("font_manager: Successfully loaded Freetype font '%s'", name);
} else {
if (open_xcb_font(f, name)) {
m_logger.info("Loaded font (xlfd=%s)", name);
} else if (f->ptr != XCB_NONE) {
m_connection.close_font_checked(f->ptr);
f->ptr = XCB_NONE;
}
if (f->ptr == XCB_NONE && (f->xft = XftFontOpenName(m_display, m_connection.default_screen(), name.c_str())) != nullptr) {
f->ascent = f->xft->ascent;
f->descent = f->xft->descent;
f->height = f->ascent + f->descent;
if (f->xft->pattern != nullptr) {
FcChar8* file{nullptr};
FcPatternGetString(f->xft->pattern, "file", 0, &file);
m_logger.info("Loaded font (pattern=%s, file=%s)", name, file);
free(file);
} else {
m_logger.info("Loaded font (pattern=%s)", name);
}
}
if (f->ptr == XCB_NONE && f->xft == nullptr) {
return false;
}
m_fonts.emplace(make_pair(fontindex, move(f)));
int max_height = 0;
for (auto& iter : m_fonts) {
@ -98,8 +125,8 @@ void font_manager::set_preferred_font(int8_t index) {
}
}
font_t& font_manager::match_char(uint16_t chr) {
static font_t notfound;
fonttype_pointer& font_manager::match_char(uint16_t chr) {
static fonttype_pointer notfound;
if (!m_fonts.empty()) {
if (m_fontindex != DEFAULT_FONT_INDEX && size_t(m_fontindex) <= m_fonts.size()) {
auto iter = m_fonts.find(m_fontindex);
@ -116,7 +143,7 @@ font_t& font_manager::match_char(uint16_t chr) {
return notfound;
}
uint8_t font_manager::char_width(font_t& font, uint16_t chr) {
uint8_t font_manager::char_width(fonttype_pointer& font, uint16_t chr) {
if (!font) {
return 0;
}
@ -130,27 +157,27 @@ uint8_t font_manager::char_width(font_t& font, uint16_t chr) {
}
auto index = chr % XFT_MAXCHARS;
while (xft_chars[index] != 0 && xft_chars[index] != chr) {
while (g_xft_chars[index] != 0 && g_xft_chars[index] != chr) {
index = (index + 1) % XFT_MAXCHARS;
}
if (!xft_chars[index]) {
if (!g_xft_chars[index]) {
XGlyphInfo gi;
FT_UInt glyph = XftCharIndex(m_display, font->xft, (FcChar32)chr);
FT_UInt glyph = XftCharIndex(m_display, font->xft, static_cast<FcChar32>(chr));
XftFontLoadGlyphs(m_display, font->xft, FcFalse, &glyph, 1);
XftGlyphExtents(m_display, font->xft, &glyph, 1, &gi);
XftFontUnloadGlyphs(m_display, font->xft, &glyph, 1);
xft_chars[index] = chr;
xft_widths[index] = gi.xOff;
g_xft_chars[index] = chr;
g_xft_widths[index] = gi.xOff;
return gi.xOff;
} else if (xft_chars[index] == chr) {
return xft_widths[index];
} else if (g_xft_chars[index] == chr) {
return g_xft_widths[index];
}
return 0;
}
XftColor font_manager::xftcolor() {
XftColor* font_manager::xftcolor() {
return m_xftcolor;
}
@ -158,30 +185,36 @@ XftDraw* font_manager::xftdraw() {
return m_xftdraw;
}
XftDraw* font_manager::create_xftdraw(xcb_pixmap_t pm, xcb_colormap_t cm) {
m_xftdraw = XftDrawCreate(xlib::get_display(), pm, xlib::get_visual(), cm);
return m_xftdraw;
void font_manager::create_xftdraw(xcb_pixmap_t pm) {
destroy_xftdraw();
m_xftdraw = XftDrawCreate(m_display, pm, m_visual, m_colormap);
}
void font_manager::destroy_xftdraw() {
XftDrawDestroy(m_xftdraw);
if (m_xftdraw != nullptr) {
XftDrawDestroy(m_xftdraw);
m_xftdraw = nullptr;
}
}
void font_manager::allocate_color(uint32_t color, bool initial_alloc) {
void font_manager::allocate_color(uint32_t color) {
XRenderColor x;
x.red = color_util::red_channel<uint16_t>(color);
x.green = color_util::green_channel<uint16_t>(color);
x.blue = color_util::blue_channel<uint16_t>(color);
x.alpha = color_util::alpha_channel<uint16_t>(color);
allocate_color(x, initial_alloc);
allocate_color(x);
}
void font_manager::allocate_color(XRenderColor color, bool initial_alloc) {
if (!initial_alloc) {
XftColorFree(m_display, m_visual, m_colormap, &m_xftcolor);
void font_manager::allocate_color(XRenderColor color) {
if (m_xftcolor != nullptr) {
XftColorFree(m_display, m_visual, m_colormap, m_xftcolor);
free(m_xftcolor);
}
if (!XftColorAllocValue(m_display, m_visual, m_colormap, &color, &m_xftcolor)) {
m_xftcolor = static_cast<XftColor*>(malloc(sizeof(XftColor)));
if (!XftColorAllocValue(m_display, m_visual, m_colormap, &color, m_xftcolor)) {
m_logger.err("Failed to allocate color");
}
}
@ -191,14 +224,15 @@ void font_manager::set_gcontext_font(xcb_gcontext_t gc, xcb_font_t font) {
m_connection.change_gc(gc, XCB_GC_FONT, values);
}
bool font_manager::open_xcb_font(font_t& fontptr, string fontname) {
bool font_manager::open_xcb_font(fonttype_pointer& fontptr, string fontname) {
try {
font xfont(m_connection, m_connection.generate_id());
uint32_t font_id{m_connection.generate_id()};
m_connection.open_font_checked(font_id, fontname);
m_connection.open_font_checked(xfont, fontname);
m_logger.trace("Found X font '%s'", fontname);
fontptr->ptr = font_id;
auto query = m_connection.query_font(xfont);
auto query = m_connection.query_font(font_id);
if (query->char_infos_len == 0) {
m_logger.warn("X font '%s' does not contain any characters... (Verify the XLFD string)", fontname);
return false;
@ -214,14 +248,7 @@ bool font_manager::open_xcb_font(font_t& fontptr, string fontname) {
for (auto it = chars.begin(); it != chars.end(); it++) {
fontptr->width_lut.emplace_back(forward<xcb_charinfo_t>(*it));
}
fontptr->ptr = xfont;
return true;
} catch (const xpp::x::error::name& e) {
m_logger.trace("font_manager: Could not find X font '%s'", fontname);
} catch (const shared_ptr<xcb_generic_error_t>& e) {
m_logger.trace("font_manager: Could not find X font '%s'", fontname);
} catch (const std::exception& e) {
m_logger.trace("font_manager: Could not find X font '%s' (what: %s)", fontname, e.what());
}
@ -229,7 +256,7 @@ bool font_manager::open_xcb_font(font_t& fontptr, string fontname) {
return false;
}
bool font_manager::has_glyph(font_t& font, uint16_t chr) {
bool font_manager::has_glyph(fonttype_pointer& font, uint16_t chr) {
if (font->xft != nullptr) {
return static_cast<bool>(XftCharExists(m_display, font->xft, (FcChar32)chr));
} else {