From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH v2 12/32] Specialize std::hash for gdb_exception
Date: Thu, 4 Nov 2021 12:08:47 -0600 [thread overview]
Message-ID: <20211104180907.2360627-13-tom@tromey.com> (raw)
In-Reply-To: <20211104180907.2360627-1-tom@tromey.com>
This adds a std::hash specialization for gdb_exception. This lets us
store these objects in a hash table, which is used later in this
series to de-duplicate the exception output from multiple threads.
---
gdbsupport/common-exceptions.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/gdbsupport/common-exceptions.h b/gdbsupport/common-exceptions.h
index 5933c7356fe..051379cdb56 100644
--- a/gdbsupport/common-exceptions.h
+++ b/gdbsupport/common-exceptions.h
@@ -24,6 +24,7 @@
#include <new>
#include <memory>
#include <string>
+#include <functional>
/* Reasons for calling throw_exceptions(). NOTE: all reason values
must be different from zero. enum value 0 is reserved for internal
@@ -187,6 +188,24 @@ struct gdb_exception
std::shared_ptr<std::string> message;
};
+namespace std
+{
+
+/* Specialization of std::hash for gdb_exception. */
+template<>
+struct hash<gdb_exception>
+{
+ size_t operator() (const gdb_exception &exc) const
+ {
+ size_t result = exc.reason + exc.error;
+ if (exc.message != nullptr)
+ result += std::hash<std::string> {} (*exc.message);
+ return result;
+ }
+};
+
+}
+
/* Functions to drive the sjlj-based exceptions state machine. Though
declared here by necessity, these functions should be considered
internal to the exceptions subsystem and not used other than via
--
2.31.1
next prev parent reply other threads:[~2021-11-04 18:09 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-04 18:08 [PATCH v2 00/32] Rewrite the DWARF "partial" reader Tom Tromey
2021-11-04 18:08 ` [PATCH v2 01/32] Introduce make_unique_xstrndup Tom Tromey
2021-11-05 19:20 ` Simon Marchi
2021-11-05 20:08 ` Tom Tromey
2021-11-04 18:08 ` [PATCH v2 02/32] Split create_addrmap_from_aranges Tom Tromey
2021-11-04 18:08 ` [PATCH v2 03/32] Add dwarf2_per_cu_data::addresses_seen Tom Tromey
2021-11-04 18:08 ` [PATCH v2 04/32] Refactor dwarf2_get_pc_bounds Tom Tromey
2021-11-05 19:51 ` Simon Marchi
2021-11-24 15:53 ` Tom Tromey
2021-11-04 18:08 ` [PATCH v2 05/32] Allow ada_decode not to decode operators Tom Tromey
2021-11-04 18:08 ` [PATCH v2 06/32] Let skip_one_die not skip children Tom Tromey
2021-11-04 18:08 ` [PATCH v2 07/32] Add name splitting Tom Tromey
2021-11-04 18:08 ` [PATCH v2 08/32] Add new overload of dwarf5_djb_hash Tom Tromey
2021-11-05 20:01 ` Simon Marchi
2021-11-07 17:02 ` Tom Tromey
2021-11-04 18:08 ` [PATCH v2 09/32] Refactor build_type_psymtabs_reader Tom Tromey
2021-11-04 18:08 ` [PATCH v2 10/32] Add batching parameter to parallel_for_each Tom Tromey
2021-11-04 18:08 ` [PATCH v2 11/32] Return vector of results from parallel_for_each Tom Tromey
2021-11-17 20:37 ` Lancelot SIX
2021-11-18 14:41 ` Tom Tromey
2021-11-04 18:08 ` Tom Tromey [this message]
2021-11-04 18:08 ` [PATCH v2 13/32] Introduce DWARF abbrev cache Tom Tromey
2021-11-04 18:08 ` [PATCH v2 14/32] Statically examine abbrev properties Tom Tromey
2021-11-04 18:08 ` [PATCH v2 15/32] Update skip_one_die for new " Tom Tromey
2021-11-04 18:08 ` [PATCH v2 16/32] Introduce the new DWARF index class Tom Tromey
2021-11-04 18:08 ` [PATCH v2 17/32] The new DWARF indexer Tom Tromey
2021-11-04 18:08 ` [PATCH v2 18/32] Implement quick_symbol_functions for cooked DWARF index Tom Tromey
2021-11-04 18:08 ` [PATCH v2 19/32] Wire in the new DWARF indexer Tom Tromey
2021-11-04 18:08 ` [PATCH v2 20/32] Introduce thread-safe handling for complaints Tom Tromey
2021-11-04 18:08 ` [PATCH v2 21/32] Pre-read DWARF section data Tom Tromey
2021-11-04 18:08 ` [PATCH v2 22/32] Parallelize DWARF indexing Tom Tromey
2021-11-04 18:08 ` [PATCH v2 23/32] "Finalize" the DWARF index in the background Tom Tromey
2021-11-04 18:08 ` [PATCH v2 24/32] Rename write_psymtabs_to_index Tom Tromey
2021-11-04 18:09 ` [PATCH v2 25/32] Change the key type in psym_index_map Tom Tromey
2021-11-04 18:09 ` [PATCH v2 26/32] Change parameters to write_address_map Tom Tromey
2021-11-04 18:09 ` [PATCH v2 27/32] Genericize addrmap handling in the DWARF index writer Tom Tromey
2021-11-04 18:09 ` [PATCH v2 28/32] Adapt .gdb_index writer to new DWARF scanner Tom Tromey
2021-11-04 18:09 ` [PATCH v2 29/32] Adapt .debug_names " Tom Tromey
2021-11-04 18:09 ` [PATCH v2 30/32] Enable the new DWARF indexer Tom Tromey
2021-11-04 18:09 ` [PATCH v2 31/32] Delete DWARF psymtab code Tom Tromey
2021-11-04 18:09 ` [PATCH v2 32/32] Remove dwarf2_per_cu_data::v Tom Tromey
2021-11-06 12:25 ` [PATCH v2 00/32] Rewrite the DWARF "partial" reader Tom de Vries
2021-11-11 12:23 ` Tom de Vries
2021-11-16 23:56 ` Tom Tromey
2021-11-17 9:22 ` Tom de Vries
2021-11-18 14:43 ` Tom Tromey
2021-11-22 19:59 ` Tom Tromey
2021-11-22 20:52 ` Tom de Vries
2021-11-22 22:11 ` Tom Tromey
2021-11-23 7:56 ` Tom de Vries
2021-11-23 17:00 ` Tom Tromey
2021-11-08 17:41 ` Simon Marchi
2021-11-10 19:56 ` Tom Tromey
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