From: Aaron Merey via Gdb-patches <gdb-patches@sourceware.org>
To: gdb-patches@sourceware.org
Subject: [PING][PATCH v4] gdb: Improve debuginfod progress updates
Date: Fri, 26 Aug 2022 17:25:08 -0400 [thread overview]
Message-ID: <CAJDtP-R5S_padF0ARe4MHLFEt9hc2v2KBnbOWKS_RnE+T4D-dg@mail.gmail.com> (raw)
In-Reply-To: <20220708213306.421974-1-amerey@redhat.com>
Ping
Thanks,
Aaron
On Fri, Jul 8, 2022 at 5:33 PM Aaron Merey <amerey@redhat.com> wrote:
>
> 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.
>
> The progress update display for debuginfod downloading implemented in
> this patch is as follows.
>
> 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 | 36 +++-----
> 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, 303 insertions(+), 159 deletions(-)
>
> diff --git a/gdb/cli-out.c b/gdb/cli-out.c
> index e0802df352b..555154406cf 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:
> - <NAME
> - [##### ]\r>
> - - 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:
> + <MSG
> + [######### ] HOWMUCH*100% (TOTAL UNIT)\r>
> + - printed for tty, HOWMUCH < 0.0:
> + <MSG
> + [ ### ]\r>
> - printed for not-a-tty:
> - <NAME...
> - >
> + <MSG...\n>
> */
>
> 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 ()
> + && input_interactive_p (current_ui)
> + && 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<milliseconds>
> + (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 ()
> + || !input_interactive_p (current_ui))
> 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 3fc794b61a4..c3114878986 100644
> --- a/gdb/cli-out.h
> +++ b/gdb/cli-out.h
> @@ -21,6 +21,7 @@
> #define CLI_OUT_H
>
> #include "ui-out.h"
> +#include <chrono>
> #include <vector>
>
> 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<ui_file *> 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
> {
> + /* Position of the progress indicator. */
> + int pos;
> /* The current state. */
> - enum meter_state printing;
> - /* The name to print. */
> - std::string name;
> - /* The last notification value. */
> - double last_value;
> + 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<cli_progress_info> m_meters;
> + /* Stack of progress info. */
> + std::vector<cli_progress_info> m_progress_info;
> + void clear_current_line ();
> };
>
> extern cli_ui_out *cli_out_new (struct ui_file *stream);
> diff --git a/gdb/debuginfod-support.c b/gdb/debuginfod-support.c
> index 9dbe6b5d8b2..93b9250d6fe 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 <sstream>
>
> /* 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<debuginfod_client, debuginfod_client_deleter>;
>
> +
> +/* 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<user_data *> (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 567ef83de9b..98a552820ea 100644
> --- a/gdb/mi/mi-out.c
> +++ b/gdb/mi/mi-out.c
> @@ -258,6 +258,34 @@ 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 8f2f2d82ec0..8298e06ad46 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<mi_progress_info> 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 9e6ff9a29bf..6b86c5f0870 100644
> --- a/gdb/ui-out.h
> +++ b/gdb/ui-out.h
> @@ -277,39 +277,56 @@ 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)
> @@ -344,9 +361,9 @@ 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. */
> --
> 2.35.3
>
next prev parent reply other threads:[~2022-08-26 21:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-08 21:33 [PATCH " Aaron Merey via Gdb-patches
2022-08-26 21:25 ` Aaron Merey via Gdb-patches [this message]
2022-09-28 23:13 ` [PING*2][PATCH " Aaron Merey via Gdb-patches
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