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ircd::ctx: Add direct flags reference accessor to interface.

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This commit is contained in:
Jason Volk 2020-05-18 19:04:31 -07:00
parent 215a0148b4
commit 00fe4baa2a
4 changed files with 25 additions and 3 deletions
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4
include/ircd/ctx/context.h
View file

@ -44,7 +44,7 @@ namespace ircd::ctx
/// ///
struct ircd::ctx::context struct ircd::ctx::context
{ {
enum flags :uint; enum flags :uint32_t;
using function = std::function<void ()>; using function = std::function<void ()>;
private: private:
@ -96,7 +96,7 @@ struct ircd::ctx::context
}; };
enum ircd::ctx::context::flags enum ircd::ctx::context::flags
:uint :uint32_t
{ {
POST = 0x0001, ///< Defers spawn with an ios.post() POST = 0x0001, ///< Defers spawn with an ios.post()
DISPATCH = 0x0002, ///< Defers spawn with an ios.dispatch() DISPATCH = 0x0002, ///< Defers spawn with an ios.dispatch()

2
include/ircd/ctx/ctx.h
View file

@ -47,6 +47,7 @@ namespace ircd::ctx
const uint64_t &id(const ctx &) noexcept; // Unique ID for context const uint64_t &id(const ctx &) noexcept; // Unique ID for context
string_view name(const ctx &) noexcept; // User's optional label for context string_view name(const ctx &) noexcept; // User's optional label for context
const uint32_t &flags(const ctx &) noexcept; // Direct flags access
const int32_t &notes(const ctx &) noexcept; // Peeks at internal semaphore count const int32_t &notes(const ctx &) noexcept; // Peeks at internal semaphore count
const uint64_t &epoch(const ctx &) noexcept; // Context switching counter const uint64_t &epoch(const ctx &) noexcept; // Context switching counter
const ulong &cycles(const ctx &) noexcept; // Accumulated tsc (not counting cur slice) const ulong &cycles(const ctx &) noexcept; // Accumulated tsc (not counting cur slice)
@ -61,6 +62,7 @@ namespace ircd::ctx
bool waiting(const ctx &) noexcept; // started() && !finished() && !running() bool waiting(const ctx &) noexcept; // started() && !finished() && !running()
bool queued(const ctx &) noexcept; // !running() && notes() > 0 bool queued(const ctx &) noexcept; // !running() && notes() > 0
uint32_t &flags(ctx &) noexcept; // Direct flags access
int8_t ionice(ctx &, const int8_t &); // IO priority nice-value int8_t ionice(ctx &, const int8_t &); // IO priority nice-value
int8_t nice(ctx &, const int8_t &); // Scheduling priority nice-value int8_t nice(ctx &, const int8_t &); // Scheduling priority nice-value
void interruptible(ctx &, const bool &); // False for interrupt suppression. void interruptible(ctx &, const bool &); // False for interrupt suppression.

18
ircd/ctx.cc
View file

@ -537,6 +537,15 @@ ircd::ctx::ionice(ctx &ctx,
return ctx.ionice; return ctx.ionice;
} }
/// Returns writable reference to the flags of ctx
[[gnu::hot]]
uint32_t &
ircd::ctx::flags(ctx &ctx)
noexcept
{
return ctx.flags;
}
/// !running() && notes > 0 /// !running() && notes > 0
[[gnu::hot]] [[gnu::hot]]
bool bool
@ -654,6 +663,15 @@ noexcept
return ctx.notes; return ctx.notes;
} }
/// Returns reference to the flags of ctx
[[gnu::hot]]
const uint32_t &
ircd::ctx::flags(const ctx &ctx)
noexcept
{
return ctx.flags;
}
/// Returns the developer's optional name literal for `ctx` /// Returns the developer's optional name literal for `ctx`
[[gnu::hot]] [[gnu::hot]]
ircd::string_view ircd::string_view

4
ircd/ctx.h
View file

@ -28,12 +28,14 @@ namespace ircd::ctx::prof
struct ircd::ctx::ctx struct ircd::ctx::ctx
:instance_list<ctx> :instance_list<ctx>
{ {
using flags_type = std::underlying_type<context::flags>::type;
static uint64_t id_ctr; // monotonic static uint64_t id_ctr; // monotonic
static ios::descriptor ios_desc; static ios::descriptor ios_desc;
uint64_t id {++id_ctr}; // Unique runtime ID uint64_t id {++id_ctr}; // Unique runtime ID
string_view name; // User given name (optional) string_view name; // User given name (optional)
context::flags flags; // User given flags flags_type flags; // User given flags
int8_t nice {0}; // Scheduling priority nice-value int8_t nice {0}; // Scheduling priority nice-value
int8_t ionice {0}; // IO priority nice-value (defaults for fs::opts) int8_t ionice {0}; // IO priority nice-value (defaults for fs::opts)
int32_t notes {0}; // norm: 0 = asleep; 1 = awake; inc by others; dec by self int32_t notes {0}; // norm: 0 = asleep; 1 = awake; inc by others; dec by self