c-postgres-postgres-change-ctrl-c-behaviour

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Before

translation_unit

comment "/*----------------------------------------------------------"...

preproc_include

#include "#include"

string_literal

" "\""

string_content "postgres.h"

" "\""

preproc_include

#include "#include"

system_lib_string "<signal.h>"

preproc_include

#include "#include"

system_lib_string "<unistd.h>"

preproc_include

#include "#include"

string_literal

" "\""

string_content "access/xlog.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "libpq/pqsignal.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "miscadmin.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "pgstat.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/auxprocess.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/interrupt.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/walwriter.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/aio_subsys.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/bufmgr.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/condition_variable.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/fd.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/lwlock.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/proc.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/procsignal.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/smgr.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/hsearch.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/memutils.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/resowner.h"

" "\""

comment "/*\n * GUC parameters\n */"

declaration

primitive_type "int"

init_declarator

identifier "WalWriterDelay"

= "="

number_literal "200"

; ";"

declaration

primitive_type "int"

init_declarator

identifier "WalWriterFlushAfter"

= "="

identifier "DEFAULT_WAL_WRITER_FLUSH_AFTER"

; ";"

comment "/*\n * Number of do-nothing loops before lengthening the dela"...

preproc_def

#define "#define"

identifier "LOOPS_UNTIL_HIBERNATE"

preproc_arg "50"

preproc_def

#define "#define"

identifier "HIBERNATE_FACTOR"

preproc_arg "25"

comment "/*\n * Main entry point for walwriter process\n *\n * This is i"...

function_definition

primitive_type "void"

function_declarator

identifier "WalWriterMain"

parameter_list

( "("

parameter_declaration

type_qualifier

const "const"

primitive_type "void"

pointer_declarator

* "*"

identifier "startup_data"

, ","

parameter_declaration

primitive_type "size_t"

identifier "startup_data_len"

) ")"

compound_statement

{ "{"

declaration

type_identifier "sigjmp_buf"

identifier "local_sigjmp_buf"

; ";"

declaration

type_identifier "MemoryContext"

identifier "walwriter_context"

; ";"

declaration

primitive_type "int"

identifier "left_till_hibernate"

; ";"

declaration

primitive_type "bool"

identifier "hibernating"

; ";"

expression_statement

call_expression

identifier "Assert"

argument_list

( "("

binary_expression

identifier "startup_data_len"

== "=="

number_literal "0"

) ")"

; ";"

expression_statement

call_expression

identifier "AuxiliaryProcessMainCommon"

argument_list

( "("

) ")"

; ";"

comment "/*\n\t * Properly accept or ignore signals the postmaster migh"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGHUP"

, ","

identifier "SignalHandlerForConfigReload"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGINT"

, ","

identifier "SignalHandlerForShutdownRequest"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGTERM"

, ","

identifier "SignalHandlerForShutdownRequest"

) ")"

; ";"

comment "/* SIGQUIT handler was already set up by InitPostmasterChild"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGALRM"

, ","

identifier "SIG_IGN"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGPIPE"

, ","

identifier "SIG_IGN"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGUSR1"

, ","

identifier "procsignal_sigusr1_handler"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGUSR2"

, ","

identifier "SIG_IGN"

) ")"

; ";"

comment "/* not used */"

comment "/*\n\t * Reset some signals that are accepted by postmaster bu"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGCHLD"

, ","

identifier "SIG_DFL"

) ")"

; ";"

comment "/*\n\t * Create a memory context that we will do all our work "...

expression_statement

assignment_expression

identifier "walwriter_context"

= "="

call_expression

identifier "AllocSetContextCreate"

argument_list

( "("

identifier "TopMemoryContext"

, ","

string_literal

" "\""

string_content "Wal Writer"

" "\""

, ","

identifier "ALLOCSET_DEFAULT_SIZES"

) ")"

; ";"

expression_statement

call_expression

identifier "MemoryContextSwitchTo"

argument_list

( "("

identifier "walwriter_context"

) ")"

; ";"

comment "/*\n\t * If an exception is encountered, processing resumes he"...

if_statement (+160 nodes collapsed)

comment "/* We can now handle ereport(ERROR) */"

expression_statement

assignment_expression

identifier "PG_exception_stack"

= "="

pointer_expression

& "&"

identifier "local_sigjmp_buf"

; ";"

comment "/*\n\t * Unblock signals (they were blocked when the postmaste"...

expression_statement

call_expression

identifier "sigprocmask"

argument_list

( "("

identifier "SIG_SETMASK"

, ","

pointer_expression

& "&"

identifier "UnBlockSig"

, ","

null

NULL "NULL"

) ")"

; ";"

comment "/*\n\t * Reset hibernation state after any error.\n\t */"

expression_statement

assignment_expression

identifier "left_till_hibernate"

= "="

identifier "LOOPS_UNTIL_HIBERNATE"

; ";"

expression_statement

assignment_expression

identifier "hibernating"

= "="

false "false"

; ";"

expression_statement

call_expression

identifier "SetWalWriterSleeping"

argument_list

( "("

false "false"

) ")"

; ";"

comment "/*\n\t * Advertise our proc number that backends can use to wa"...

expression_statement

assignment_expression

field_expression

identifier "ProcGlobal"

-> "->"

field_identifier "walwriterProc"

= "="

identifier "MyProcNumber"

; ";"

comment "/*\n\t * Loop forever\n\t */"

for_statement (+165 nodes collapsed)

} "}"

After

translation_unit

comment "/*----------------------------------------------------------"...

preproc_include

#include "#include"

string_literal

" "\""

string_content "postgres.h"

" "\""

preproc_include

#include "#include"

system_lib_string "<signal.h>"

preproc_include

#include "#include"

system_lib_string "<unistd.h>"

preproc_include

#include "#include"

string_literal

" "\""

string_content "access/xlog.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "libpq/pqsignal.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "miscadmin.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "pgstat.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/auxprocess.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/interrupt.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "postmaster/walwriter.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/aio_subsys.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/bufmgr.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/condition_variable.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/fd.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/lwlock.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/proc.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/procsignal.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "storage/smgr.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/hsearch.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/memutils.h"

" "\""

preproc_include

#include "#include"

string_literal

" "\""

string_content "utils/resowner.h"

" "\""

comment "/*\n * GUC parameters\n */"

declaration

primitive_type "int"

init_declarator

identifier "WalWriterDelay"

= "="

number_literal "200"

; ";"

declaration

primitive_type "int"

init_declarator

identifier "WalWriterFlushAfter"

= "="

identifier "DEFAULT_WAL_WRITER_FLUSH_AFTER"

; ";"

comment "/*\n * Number of do-nothing loops before lengthening the dela"...

preproc_def

#define "#define"

identifier "LOOPS_UNTIL_HIBERNATE"

preproc_arg "50"

preproc_def

#define "#define"

identifier "HIBERNATE_FACTOR"

preproc_arg "25"

comment "/*\n * Main entry point for walwriter process\n *\n * This is i"...

function_definition

primitive_type "void"

function_declarator

identifier "WalWriterMain"

parameter_list

( "("

parameter_declaration

type_qualifier

const "const"

primitive_type "void"

pointer_declarator

* "*"

identifier "startup_data"

, ","

parameter_declaration

primitive_type "size_t"

identifier "startup_data_len"

) ")"

compound_statement

{ "{"

declaration

type_identifier "sigjmp_buf"

identifier "local_sigjmp_buf"

; ";"

declaration

type_identifier "MemoryContext"

identifier "walwriter_context"

; ";"

declaration

primitive_type "int"

identifier "left_till_hibernate"

; ";"

declaration

primitive_type "bool"

identifier "hibernating"

; ";"

expression_statement

call_expression

identifier "Assert"

argument_list

( "("

binary_expression

identifier "startup_data_len"

== "=="

number_literal "0"

) ")"

; ";"

expression_statement

call_expression

identifier "AuxiliaryProcessMainCommon"

argument_list

( "("

) ")"

; ";"

comment "/*\n\t * Properly accept or ignore signals the postmaster migh"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGHUP"

, ","

identifier "SignalHandlerForConfigReload"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGINT"

, ","

identifier "SIG_IGN"

) ")"

; ";"

comment "/* no query to cancel */"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGTERM"

, ","

identifier "SignalHandlerForShutdownRequest"

) ")"

; ";"

comment "/* SIGQUIT handler was already set up by InitPostmasterChild"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGALRM"

, ","

identifier "SIG_IGN"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGPIPE"

, ","

identifier "SIG_IGN"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGUSR1"

, ","

identifier "procsignal_sigusr1_handler"

) ")"

; ";"

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGUSR2"

, ","

identifier "SIG_IGN"

) ")"

; ";"

comment "/* not used */"

comment "/*\n\t * Reset some signals that are accepted by postmaster bu"...

expression_statement

call_expression

identifier "pqsignal"

argument_list

( "("

identifier "SIGCHLD"

, ","

identifier "SIG_DFL"

) ")"

; ";"

comment "/*\n\t * Create a memory context that we will do all our work "...

expression_statement

assignment_expression

identifier "walwriter_context"

= "="

call_expression

identifier "AllocSetContextCreate"

argument_list

( "("

identifier "TopMemoryContext"

, ","

string_literal

" "\""

string_content "Wal Writer"

" "\""

, ","

identifier "ALLOCSET_DEFAULT_SIZES"

) ")"

; ";"

expression_statement

call_expression

identifier "MemoryContextSwitchTo"

argument_list

( "("

identifier "walwriter_context"

) ")"

; ";"

comment "/*\n\t * If an exception is encountered, processing resumes he"...

if_statement (+160 nodes collapsed)

comment "/* We can now handle ereport(ERROR) */"

expression_statement

assignment_expression

identifier "PG_exception_stack"

= "="

pointer_expression

& "&"

identifier "local_sigjmp_buf"

; ";"

comment "/*\n\t * Unblock signals (they were blocked when the postmaste"...

expression_statement

call_expression

identifier "sigprocmask"

argument_list

( "("

identifier "SIG_SETMASK"

, ","

pointer_expression

& "&"

identifier "UnBlockSig"

, ","

null

NULL "NULL"

) ")"

; ";"

comment "/*\n\t * Reset hibernation state after any error.\n\t */"

expression_statement

assignment_expression

identifier "left_till_hibernate"

= "="

identifier "LOOPS_UNTIL_HIBERNATE"

; ";"

expression_statement

assignment_expression

identifier "hibernating"

= "="

false "false"

; ";"

expression_statement

call_expression

identifier "SetWalWriterSleeping"

argument_list

( "("

false "false"

) ")"

; ";"

comment "/*\n\t * Advertise our proc number that backends can use to wa"...

expression_statement

assignment_expression

field_expression

identifier "ProcGlobal"

-> "->"

field_identifier "walwriterProc"

= "="

identifier "MyProcNumber"

; ";"

comment "/*\n\t * Loop forever\n\t */"

for_statement (+165 nodes collapsed)

} "}"