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cgen: fix parallel waiter function generation (#12895)

pull/12898/head
Leo Developer 2021-12-19 12:38:48 +01:00 committed by GitHub
parent 2ab861ef89
commit a7019ac86c
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1 changed files with 32 additions and 17 deletions
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49
vlib/v/gen/c/cgen.v
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@ -132,7 +132,7 @@ mut:
str_types []StrType // types that need automatic str() generation
generated_str_fns []StrType // types that already have a str() function
threaded_fns shared []string // for generating unique wrapper types and fns for `go xxx()`
waiter_fns []string // functions that wait for `go xxx()` to finish
waiter_fns shared []string // functions that wait for `go xxx()` to finish
needed_equality_fns []ast.Type
generated_eq_fns []ast.Type
array_sort_fn shared []string
@ -328,7 +328,6 @@ pub fn gen(files []&ast.File, table &ast.Table, pref &pref.Preferences) string {
global_g.nr_closures += g.nr_closures
global_g.has_main = global_g.has_main || g.has_main
global_g.waiter_fns << g.waiter_fns
global_g.auto_fn_definitions << g.auto_fn_definitions
global_g.anon_fn_definitions << g.anon_fn_definitions
global_g.needed_equality_fns << g.needed_equality_fns // duplicates are resolved later in gen_equality_fns
@ -525,6 +524,7 @@ fn cgen_process_one_file_cb(p &pool.PoolProcessor, idx int, wid int) &Gen {
inner_loop: &ast.EmptyStmt{}
field_data_type: ast.Type(global_g.table.find_type_idx('FieldData'))
array_sort_fn: global_g.array_sort_fn
waiter_fns: global_g.waiter_fns
threaded_fns: global_g.threaded_fns
done_optionals: global_g.done_optionals
is_autofree: global_g.pref.autofree
@ -961,20 +961,23 @@ fn (mut g Gen) write_shareds() {
}
fn (mut g Gen) register_thread_void_wait_call() {
if '__v_thread_wait' !in g.waiter_fns {
g.gowrappers.writeln('void __v_thread_wait(__v_thread thread) {')
if g.pref.os == .windows {
g.gowrappers.writeln('\tu32 stat = WaitForSingleObject(thread, INFINITE);')
} else {
g.gowrappers.writeln('\tint stat = pthread_join(thread, (void **)NULL);')
lock g.waiter_fns {
if '__v_thread_wait' in g.waiter_fns {
return
}
g.gowrappers.writeln('\tif (stat != 0) { _v_panic(_SLIT("unable to join thread")); }')
if g.pref.os == .windows {
g.gowrappers.writeln('\tCloseHandle(thread);')
}
g.gowrappers.writeln('}')
g.waiter_fns << '__v_thread_wait'
}
g.gowrappers.writeln('void __v_thread_wait(__v_thread thread) {')
if g.pref.os == .windows {
g.gowrappers.writeln('\tu32 stat = WaitForSingleObject(thread, INFINITE);')
} else {
g.gowrappers.writeln('\tint stat = pthread_join(thread, (void **)NULL);')
}
g.gowrappers.writeln('\tif (stat != 0) { _v_panic(_SLIT("unable to join thread")); }')
if g.pref.os == .windows {
g.gowrappers.writeln('\tCloseHandle(thread);')
}
g.gowrappers.writeln('}')
}
fn (mut g Gen) register_thread_array_wait_call(eltyp string) string {
@ -983,8 +986,14 @@ fn (mut g Gen) register_thread_array_wait_call(eltyp string) string {
ret_typ := if is_void { 'void' } else { 'Array_$eltyp' }
thread_arr_typ := 'Array_$thread_typ'
fn_name := '${thread_arr_typ}_wait'
if fn_name !in g.waiter_fns {
g.waiter_fns << fn_name
mut should_register := false
lock g.waiter_fns {
if fn_name !in g.waiter_fns {
g.waiter_fns << fn_name
should_register = true
}
}
if should_register {
if is_void {
g.register_thread_void_wait_call()
g.gowrappers.writeln('
@ -6991,7 +7000,14 @@ fn (mut g Gen) go_expr(node ast.GoExpr) {
handle = 'thread_$tmp'
// create wait handler for this return type if none exists
waiter_fn_name := gohandle_name + '_wait'
if waiter_fn_name !in g.waiter_fns {
mut should_register := false
lock g.waiter_fns {
if waiter_fn_name !in g.waiter_fns {
g.waiter_fns << waiter_fn_name
should_register = true
}
}
if should_register {
g.gowrappers.writeln('\n$s_ret_typ ${waiter_fn_name}($gohandle_name thread) {')
mut c_ret_ptr_ptr := 'NULL'
if node.call_expr.return_type != ast.void_type {
@ -7022,7 +7038,6 @@ fn (mut g Gen) go_expr(node ast.GoExpr) {
g.gowrappers.writeln('\treturn ret;')
}
g.gowrappers.writeln('}')
g.waiter_fns << waiter_fn_name
}
}
// Register the wrapper type and function