From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH v3 12/33] Specialize std::hash for gdb_exception
Date: Sat, 4 Dec 2021 13:38:23 -0700 [thread overview]
Message-ID: <20211204203844.1188999-13-tom@tromey.com> (raw)
In-Reply-To: <20211204203844.1188999-1-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:[~2021-12-04 20:38 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-04 20:38 [PATCH v3 00/33] Rewrite the DWARF "partial" reader Tom Tromey
2021-12-04 20:38 ` [PATCH v3 01/33] Split create_addrmap_from_aranges Tom Tromey
2021-12-04 20:38 ` [PATCH v3 02/33] Fix latent bug in read_addrmap_from_aranges Tom Tromey
2021-12-04 20:38 ` [PATCH v3 03/33] Add dwarf2_per_cu_data::addresses_seen Tom Tromey
2021-12-04 20:38 ` [PATCH v3 04/33] Refactor dwarf2_get_pc_bounds Tom Tromey
2021-12-04 20:38 ` [PATCH v3 05/33] Allow ada_decode not to decode operators Tom Tromey
2021-12-04 20:38 ` [PATCH v3 06/33] Let skip_one_die not skip children Tom Tromey
2021-12-04 20:38 ` [PATCH v3 07/33] Add name splitting Tom Tromey
2021-12-04 20:38 ` [PATCH v3 08/33] Add new overload of dwarf5_djb_hash Tom Tromey
2021-12-04 20:38 ` [PATCH v3 09/33] Refactor build_type_psymtabs_reader Tom Tromey
2021-12-04 20:38 ` [PATCH v3 10/33] Add batching parameter to parallel_for_each Tom Tromey
2021-12-04 20:38 ` [PATCH v3 11/33] Return vector of results from parallel_for_each Tom Tromey
2022-03-29 17:36 ` Pedro Alves
2022-03-29 20:07 ` Tom Tromey
2021-12-04 20:38 ` Tom Tromey [this message]
2021-12-04 20:38 ` [PATCH v3 13/33] Add "fullname" handling to file_and_directory Tom Tromey
2021-12-07 17:17 ` Tom Tromey
2021-12-04 20:38 ` [PATCH v3 14/33] Introduce DWARF abbrev cache Tom Tromey
2021-12-04 20:38 ` [PATCH v3 15/33] Statically examine abbrev properties Tom Tromey
2021-12-04 20:38 ` [PATCH v3 16/33] Update skip_one_die for new " Tom Tromey
2021-12-04 20:38 ` [PATCH v3 17/33] Introduce the new DWARF index class Tom Tromey
2021-12-04 20:38 ` [PATCH v3 18/33] The new DWARF indexer Tom Tromey
2022-03-29 18:04 ` Pedro Alves
2022-03-29 20:08 ` Tom Tromey
2021-12-04 20:38 ` [PATCH v3 19/33] Implement quick_symbol_functions for cooked DWARF index Tom Tromey
2021-12-04 20:38 ` [PATCH v3 20/33] Wire in the new DWARF indexer Tom Tromey
2021-12-04 20:38 ` [PATCH v3 21/33] Introduce thread-safe handling for complaints Tom Tromey
2021-12-04 20:38 ` [PATCH v3 22/33] Pre-read DWARF section data Tom Tromey
2021-12-04 20:38 ` [PATCH v3 23/33] Parallelize DWARF indexing Tom Tromey
2022-03-30 10:24 ` Pedro Alves
2022-03-30 20:23 ` Tom Tromey
2022-03-30 21:24 ` Tom Tromey
2021-12-04 20:38 ` [PATCH v3 24/33] "Finalize" the DWARF index in the background Tom Tromey
2021-12-04 20:38 ` [PATCH v3 25/33] Rename write_psymtabs_to_index Tom Tromey
2021-12-04 20:38 ` [PATCH v3 26/33] Change the key type in psym_index_map Tom Tromey
2021-12-04 20:38 ` [PATCH v3 27/33] Change parameters to write_address_map Tom Tromey
2021-12-04 20:38 ` [PATCH v3 28/33] Genericize addrmap handling in the DWARF index writer Tom Tromey
2021-12-04 20:38 ` [PATCH v3 29/33] Adapt .gdb_index writer to new DWARF scanner Tom Tromey
2021-12-04 20:38 ` [PATCH v3 30/33] Adapt .debug_names " Tom Tromey
2021-12-04 20:38 ` [PATCH v3 31/33] Enable the new DWARF indexer Tom Tromey
2021-12-04 20:38 ` [PATCH v3 32/33] Delete DWARF psymtab code Tom Tromey
2021-12-04 20:38 ` [PATCH v3 33/33] Remove dwarf2_per_cu_data::v Tom Tromey
2022-01-05 17:18 ` [PATCH v3 00/33] Rewrite the DWARF "partial" reader Tom Tromey
2022-03-24 16:18 ` Tom Tromey
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