From patchwork Wed Oct 12 18:53:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Merey X-Patchwork-Id: 58742 From: amerey@redhat.com (Aaron Merey) Date: Wed, 12 Oct 2022 14:53:27 -0400 List-Id: gdb-patches mailing list Subject: [PING*3][PATCH v4] gdb: Improve debuginfod progress updates In-Reply-To: References: Message-ID: <20221012185327.370210-1-amerey@redhat.com> Hi, I made a couple small adjustments to this patch to ensure it builds on the main branch. Otherwise the original v4 patch follow: v3 can be found here: https://sourceware.org/pipermail/gdb-patches/2022-February/185798.html Changes from v3 include a simplified progress update API and display. Truncation of the progress update message has been removed as well. If the download size is known, a progress bar is displayed along with the percentage of completion and the total download size. Downloading separate debug info for /lib/libxyz.so [############ ] 25% (10.01 MB) If the download size is not known, a progress indicator is displayed with a ticker ("###") that moves across the screen at a rate of 1 tick every 0.5 seconds. Downloading separate debug info for /lib/libxyz.so [ ### ] If the output stream is not a tty, batch mode is enabled or the screen is too narrow then only a static description of the download is printed. No bar or ticker is displayed. Downloading separate debug info for /lib/libxyz.so... In any case, if the size of the download is known at the time the description is printed then it will be included in the description. Downloading 10.01 MB separate debug info for /lib/libxyz.so... --- gdb/cli-out.c | 194 +++++++++++++++++++++++++-------------- gdb/cli-out.h | 40 +++----- gdb/debuginfod-support.c | 130 +++++++++++++++++--------- gdb/mi/mi-out.c | 28 ++++++ gdb/mi/mi-out.h | 21 +++-- gdb/ui-out.h | 53 +++++++---- 6 files changed, 305 insertions(+), 161 deletions(-) diff --git a/gdb/cli-out.c b/gdb/cli-out.c index fdbed6f5e91..1cc9143980e 100644 --- a/gdb/cli-out.c +++ b/gdb/cli-out.c @@ -26,6 +26,7 @@ #include "completer.h" #include "readline/readline.h" #include "cli/cli-style.h" +#include "top.h" /* These are the CLI output functions */ @@ -262,105 +263,164 @@ cli_ui_out::do_redirect (ui_file *outstream) m_streams.pop_back (); } -/* The cli_ui_out::do_progress_* functions result in the following: - - printed for tty, SHOULD_PRINT == true: - - - printed for tty, SHOULD_PRINT == false: - <> +/* Initialize a progress update to be displayed with + cli_ui_out::do_progress_notify. */ + +void +cli_ui_out::do_progress_start () +{ + cli_progress_info info; + + info.pos = 0; + info.state = progress_update::START; + m_progress_info.push_back (std::move (info)); +} + +/* Print a progress update. MSG is a string to be printed on the line above + the progress bar. TOTAL is the size of the download whose progress is + being displayed. UNIT should be the unit of TOTAL (ex. "KB"). If HOWMUCH + is between 0.0 and 1.0, a progress bar is displayed indicating the percentage + of completion and the download size. If HOWMUCH is negative, a progress + indicator will tick across the screen. If the output stream is not a tty + then only MSG is printed. + + - printed for tty, HOWMUCH between 0.0 and 1.0: + + - printed for tty, HOWMUCH < 0.0: + - printed for not-a-tty: - + */ void -cli_ui_out::do_progress_start (const std::string &name, bool should_print) +cli_ui_out::do_progress_notify (const std::string &msg, + const std::string &unit, + double howmuch, double total) { + int chars_per_line = get_chars_per_line (); struct ui_file *stream = m_streams.back (); - cli_progress_info meter; + cli_progress_info &info (m_progress_info.back ()); + +#define MIN_CHARS_PER_LINE 50 +#define MAX_CHARS_PER_LINE 4096 + + if (chars_per_line > MAX_CHARS_PER_LINE + || chars_per_line == -1) + chars_per_line = MAX_CHARS_PER_LINE; + + if (info.state == progress_update::START) + { + if (stream->isatty () + && current_ui->input_interactive_p () + && chars_per_line >= MIN_CHARS_PER_LINE) + { + gdb_printf (stream, "%s\n", msg.c_str ()); + info.state = progress_update::BAR; + } + else + { + gdb_printf (stream, "%s...\n", msg.c_str ()); + info.state = progress_update::WORKING; + } + } - meter.last_value = 0; - meter.name = name; - if (!stream->isatty ()) + if (info.state != progress_update::BAR + || chars_per_line < MIN_CHARS_PER_LINE) + return; + + if (total > 0 && howmuch >= 0 && howmuch <= 1.0) { - gdb_printf (stream, "%s...", meter.name.c_str ()); + std::string progress = string_printf (" %3.f%% (%.2f %s)", + howmuch * 100, total, + unit.c_str ()); + int width = chars_per_line - progress.size () - 3; + int max = width * howmuch; + + std::string display = "\r["; + + for (int i = 0; i < width; ++i) + if (i < max) + display += "#"; + else + display += " "; + + display += "]" + progress; + gdb_printf (stream, "%s", display.c_str ()); gdb_flush (stream); - meter.printing = WORKING; } else { - /* Don't actually emit anything until the first call notifies us - of progress. This makes it so a second progress message can - be started before the first one has been notified, without - messy output. */ - meter.printing = should_print ? START : NO_PRINT; + using namespace std::chrono; + milliseconds diff = duration_cast + (steady_clock::now () - info.last_update); + + /* Advance the progress indicator at a rate of 1 tick every + every 0.5 seconds. */ + if (diff.count () >= 500) + { + int width = chars_per_line - 3; + + gdb_printf (stream, "\r["); + for (int i = 0; i < width; ++i) + { + if (i == info.pos % width + || i == (info.pos + 1) % width + || i == (info.pos + 2) % width) + gdb_printf (stream, "#"); + else + gdb_printf (stream, " "); + } + + gdb_printf (stream, "]"); + gdb_flush (stream); + info.last_update = steady_clock::now (); + info.pos++; + } } - m_meters.push_back (std::move (meter)); + return; } +/* Clear the current line of the most recent progress update. Overwrites + the current line with whitespace. */ + void -cli_ui_out::do_progress_notify (double howmuch) +cli_ui_out::clear_current_line () { struct ui_file *stream = m_streams.back (); - cli_progress_info &meter (m_meters.back ()); + int chars_per_line = get_chars_per_line (); - if (meter.printing == NO_PRINT) + if (!stream->isatty () + || !current_ui->input_interactive_p ()) return; - if (meter.printing == START) - { - gdb_printf (stream, "%s\n", meter.name.c_str ()); - gdb_flush (stream); - meter.printing = WORKING; - } + if (chars_per_line > MAX_CHARS_PER_LINE + || chars_per_line == -1) + chars_per_line = MAX_CHARS_PER_LINE; - if (meter.printing == WORKING && howmuch >= 1.0) - return; + int width = chars_per_line; - if (!stream->isatty ()) - return; + gdb_printf (stream, "\r"); + for (int i = 0; i < width; ++i) + gdb_printf (stream, " "); + gdb_printf (stream, "\r"); - int chars_per_line = get_chars_per_line (); - if (chars_per_line > 0) - { - int i, max; - int width = chars_per_line - 3; - - max = width * howmuch; - gdb_printf (stream, "\r["); - for (i = 0; i < width; ++i) - gdb_printf (stream, i < max ? "#" : " "); - gdb_printf (stream, "]"); - gdb_flush (stream); - meter.printing = PROGRESS; - } + gdb_flush (stream); } +/* Remove the most recent progress update from the progress_info stack + and overwrite the current line with whitespace. */ + void cli_ui_out::do_progress_end () { struct ui_file *stream = m_streams.back (); - cli_progress_info &meter = m_meters.back (); - - if (!stream->isatty ()) - { - gdb_printf (stream, "\n"); - gdb_flush (stream); - } - else if (meter.printing == PROGRESS) - { - int i; - int width = get_chars_per_line () - 3; - - gdb_printf (stream, "\r"); - for (i = 0; i < width + 2; ++i) - gdb_printf (stream, " "); - gdb_printf (stream, "\r"); - gdb_flush (stream); - } + m_progress_info.pop_back (); - m_meters.pop_back (); + if (stream->isatty ()) + clear_current_line (); } /* local functions */ diff --git a/gdb/cli-out.h b/gdb/cli-out.h index 3f01fe0db6d..01aed00bdf0 100644 --- a/gdb/cli-out.h +++ b/gdb/cli-out.h @@ -21,6 +21,7 @@ #define CLI_OUT_H #include "ui-out.h" +#include #include class cli_ui_out : public ui_out @@ -71,8 +72,9 @@ class cli_ui_out : public ui_out virtual void do_flush () override; virtual void do_redirect (struct ui_file *outstream) override; - virtual void do_progress_start (const std::string &, bool) override; - virtual void do_progress_notify (double) override; + virtual void do_progress_start () override; + virtual void do_progress_notify (const std::string &, const std::string &, + double, double) override; virtual void do_progress_end () override; bool suppress_output () @@ -85,32 +87,20 @@ class cli_ui_out : public ui_out std::vector m_streams; bool m_suppress_output; - /* Represents the printing state of a progress meter. */ - enum meter_state - { - /* Printing will start with the next output. */ - START, - /* Printing has already started. */ - WORKING, - /* Progress printing has already started. */ - PROGRESS, - /* Printing should not be done. */ - NO_PRINT - }; - - /* The state of a recent progress meter. */ + /* The state of a recent progress update. */ struct cli_progress_info - { - /* The current state. */ - enum meter_state printing; - /* The name to print. */ - std::string name; - /* The last notification value. */ - double last_value; + { + /* Position of the progress indicator. */ + int pos; + /* The current state. */ + progress_update::state state; + /* Progress indicator's time of last update. */ + std::chrono::steady_clock::time_point last_update; }; - /* Stack of progress meters. */ - std::vector m_meters; + /* Stack of progress info. */ + std::vector m_progress_info; + void clear_current_line (); }; extern void cli_display_match_list (char **matches, int len, int max); diff --git a/gdb/debuginfod-support.c b/gdb/debuginfod-support.c index 5f04a2b38ca..fc62412fff2 100644 --- a/gdb/debuginfod-support.c +++ b/gdb/debuginfod-support.c @@ -24,7 +24,9 @@ #include "gdbsupport/gdb_optional.h" #include "cli/cli-cmds.h" #include "cli/cli-style.h" +#include "cli-out.h" #include "target.h" +#include /* Set/show debuginfod commands. */ static cmd_list_element *set_debuginfod_prefix_list; @@ -87,12 +89,12 @@ debuginfod_exec_query (const unsigned char *build_id, struct user_data { user_data (const char *desc, const char *fname) - : desc (desc), fname (fname), has_printed (false) + : desc (desc), fname (fname) { } const char * const desc; const char * const fname; - bool has_printed; + ui_out::progress_update progress; }; /* Deleter for a debuginfod_client. */ @@ -108,47 +110,85 @@ struct debuginfod_client_deleter using debuginfod_client_up = std::unique_ptr; + +/* Convert SIZE into a unit suitable for use with progress updates. + SIZE should in given in bytes and will be converted into KB, MB, GB + or remain unchanged. UNIT will be set to "B", "KB", "MB" or "GB" + accordingly. */ + +static void +get_size_and_unit (double &size, std::string &unit) +{ + if (size < 1024) + { + /* If size is less than 1 KB then set unit to B. */ + unit = "B"; + return; + } + + size /= 1024; + if (size < 1024) + { + /* If size is less than 1 MB then set unit to KB. */ + unit = "KB"; + return; + } + + size /= 1024; + if (size < 1024) + { + /* If size is less than 1 GB then set unit to MB. */ + unit = "MB"; + return; + } + + size /= 1024; + unit = "GB"; +} + static int progressfn (debuginfod_client *c, long cur, long total) { user_data *data = static_cast (debuginfod_get_user_data (c)); gdb_assert (data != nullptr); + string_file styled_fname (current_uiout->can_emit_style_escape ()); + fprintf_styled (&styled_fname, file_name_style.style (), "%s", + data->fname); + if (check_quit_flag ()) { - gdb_printf ("Cancelling download of %s %ps...\n", - data->desc, - styled_string (file_name_style.style (), data->fname)); + gdb_printf ("Cancelling download of %s %s...\n", + data->desc, styled_fname.c_str ()); return 1; } - if (!data->has_printed) + if (debuginfod_verbose == 0) + return 0; + + /* Print progress update. Include the transfer size if available. */ + if (total > 0) { - /* Include the transfer size, if available. */ - if (total > 0) + /* Transfer size is known. */ + double howmuch = (double) cur / (double) total; + + if (howmuch >= 0.0 && howmuch <= 1.0) { - float size = 1.0f * total / 1024; - const char *unit = "KB"; - - /* If size is greater than 0.01 MB, set unit to MB. */ - if (size > 10.24) - { - size /= 1024; - unit = "MB"; - } - - gdb_printf ("Downloading %.2f %s %s %ps...\n", - size, unit, data->desc, - styled_string (file_name_style.style (), - data->fname)); + double d_total = (double) total; + std::string unit = ""; + + get_size_and_unit (d_total, unit); + std::string msg = string_printf ("Downloading %0.2f %s %s %s", + d_total, unit.c_str (), data->desc, + styled_fname.c_str ()); + data->progress.update_progress (msg, unit, howmuch, d_total); + return 0; } - else - gdb_printf ("Downloading %s %ps...\n", data->desc, - styled_string (file_name_style.style (), data->fname)); - - data->has_printed = true; } + std::string msg = string_printf ("Downloading %s %s", + data->desc, styled_fname.c_str ()); + data->progress.update_progress (msg); return 0; } @@ -230,6 +270,23 @@ debuginfod_is_enabled () return true; } +/* Print the result of the most recent attempted download. */ + +static void +print_outcome (user_data &data, int fd) +{ + /* Clears the current line of progress output. */ + current_uiout->do_progress_end (); + + string_file styled_fname (current_uiout->can_emit_style_escape ()); + fprintf_styled (&styled_fname, file_name_style.style (), "%s", + data.fname); + + if (fd < 0 && fd != -ENOENT) + gdb_printf (_("Download failed: %s. Continuing without %s %s.\n"), + safe_strerror (-fd), data.desc, styled_fname.c_str ()); +} + /* See debuginfod-support.h */ scoped_fd @@ -263,11 +320,7 @@ debuginfod_source_query (const unsigned char *build_id, srcpath, &dname)); debuginfod_set_user_data (c, nullptr); - - if (fd.get () < 0 && fd.get () != -ENOENT) - gdb_printf (_("Download failed: %s. Continuing without source file %ps.\n"), - safe_strerror (-fd.get ()), - styled_string (file_name_style.style (), srcpath)); + print_outcome (data, fd.get ()); if (fd.get () >= 0) destname->reset (dname); @@ -305,11 +358,7 @@ debuginfod_debuginfo_query (const unsigned char *build_id, scoped_fd fd (debuginfod_find_debuginfo (c, build_id, build_id_len, &dname)); debuginfod_set_user_data (c, nullptr); - - if (fd.get () < 0 && fd.get () != -ENOENT) - gdb_printf (_("Download failed: %s. Continuing without debug info for %ps.\n"), - safe_strerror (-fd.get ()), - styled_string (file_name_style.style (), filename)); + print_outcome (data, fd.get ()); if (fd.get () >= 0) destname->reset (dname); @@ -346,12 +395,7 @@ debuginfod_exec_query (const unsigned char *build_id, scoped_fd fd (debuginfod_find_executable (c, build_id, build_id_len, &dname)); debuginfod_set_user_data (c, nullptr); - - if (fd.get () < 0 && fd.get () != -ENOENT) - gdb_printf (_("Download failed: %s. " \ - "Continuing without executable for %ps.\n"), - safe_strerror (-fd.get ()), - styled_string (file_name_style.style (), filename)); + print_outcome (data, fd.get ()); if (fd.get () >= 0) destname->reset (dname); diff --git a/gdb/mi/mi-out.c b/gdb/mi/mi-out.c index 96a847eb6b6..5c60b139775 100644 --- a/gdb/mi/mi-out.c +++ b/gdb/mi/mi-out.c @@ -259,6 +259,34 @@ mi_ui_out::main_stream () return (string_file *) m_streams.back (); } +/* Initialize a progress update to be displayed with + mi_ui_out::do_progress_notify. */ + +void +mi_ui_out::do_progress_start () +{ + mi_progress_info info; + + info.state = progress_update::START; + m_progress_info.push_back (std::move (info)); +} + +/* Indicate that a task described by MSG is in progress. */ + +void +mi_ui_out::do_progress_notify (const std::string &msg, const std::string &unit, + double cur, double total) +{ + mi_progress_info &info (m_progress_info.back ()); + + if (info.state == progress_update::START) + { + struct ui_file *stream = gdb_stdout; + gdb_printf (stream, "%s...\n", msg.c_str ()); + info.state = progress_update::WORKING; + } +} + /* Clear the buffer. */ void diff --git a/gdb/mi/mi-out.h b/gdb/mi/mi-out.h index 36d7e42345f..d80a7fce259 100644 --- a/gdb/mi/mi-out.h +++ b/gdb/mi/mi-out.h @@ -25,7 +25,6 @@ struct ui_out; struct ui_file; - class mi_ui_out : public ui_out { public: @@ -83,13 +82,9 @@ class mi_ui_out : public ui_out virtual bool do_is_mi_like_p () const override { return true; } - virtual void do_progress_start (const std::string &, bool) override - { - } - - virtual void do_progress_notify (double) override - { - } + virtual void do_progress_start () override; + virtual void do_progress_notify (const std::string &, const std::string &, + double, double) override; virtual void do_progress_end () override { @@ -101,6 +96,16 @@ class mi_ui_out : public ui_out void open (const char *name, ui_out_type type); void close (ui_out_type type); + /* The state of a recent progress_update. */ + struct mi_progress_info + { + /* The current state. */ + progress_update::state state; + }; + + /* Stack of progress info. */ + std::vector m_progress_info; + /* Convenience method that returns the MI out's string stream cast to its appropriate type. Assumes/asserts that output was not redirected. */ diff --git a/gdb/ui-out.h b/gdb/ui-out.h index 65d40875926..63334dbb8d8 100644 --- a/gdb/ui-out.h +++ b/gdb/ui-out.h @@ -278,39 +278,56 @@ class ui_out escapes. */ virtual bool can_emit_style_escape () const = 0; - /* An object that starts and finishes a progress meter. */ - class progress_meter + /* An object that starts and finishes displaying progress updates. */ + class progress_update { public: + /* Represents the printing state of a progress update. */ + enum state + { + /* Printing will start with the next update. */ + START, + /* Printing has already started. */ + WORKING, + /* Progress bar printing has already started. */ + BAR + }; + /* SHOULD_PRINT indicates whether something should be printed for a tty. */ - progress_meter (struct ui_out *uiout, const std::string &name, - bool should_print) - : m_uiout (uiout) + progress_update () { - m_uiout->do_progress_start (name, should_print); + m_uiout = current_uiout; + m_uiout->do_progress_start (); } - ~progress_meter () + ~progress_update () { - m_uiout->do_progress_notify (1.0); - m_uiout->do_progress_end (); + } - progress_meter (const progress_meter &) = delete; - progress_meter &operator= (const progress_meter &) = delete; + progress_update (const progress_update &) = delete; + progress_update &operator= (const progress_update &) = delete; - /* Emit some progress for this progress meter. HOWMUCH may range - from 0.0 to 1.0. */ - void progress (double howmuch) + /* Emit some progress for this progress meter. Includes current + amount of progress made and total amount in the display. */ + void update_progress (const std::string& msg, std::string& unit, + double cur, double total) { - m_uiout->do_progress_notify (howmuch); + m_uiout->do_progress_notify (msg, unit, cur, total); } + /* Emit some progress for this progress meter. */ + void update_progress (const std::string& msg) + { + m_uiout->do_progress_notify (msg, "", -1, -1); + } private: struct ui_out *m_uiout; }; + virtual void do_progress_end () = 0; + protected: virtual void do_table_begin (int nbrofcols, int nr_rows, const char *tblid) @@ -345,9 +362,9 @@ class ui_out virtual void do_flush () = 0; virtual void do_redirect (struct ui_file *outstream) = 0; - virtual void do_progress_start (const std::string &, bool) = 0; - virtual void do_progress_notify (double) = 0; - virtual void do_progress_end () = 0; + virtual void do_progress_start () = 0; + virtual void do_progress_notify (const std::string &, const std::string &, + double, double) = 0; /* Set as not MI-like by default. It is overridden in subclasses if necessary. */