add package tcmalloc

cmake/configs/default.cmake

@@ -530,6 +530,7 @@ hunter_default_version(tacopie VERSION 3.2.0-h1)
 hunter_default_version(taocpp-json VERSION 1.0.0-beta.11-e0895587)
 hunter_default_version(taskflow VERSION 3.0.0-9e50cf2)
 hunter_default_version(tcl VERSION core8.6.8)
+hunter_default_version(tcmalloc VERSION 0.0.0-bc7995b-p0)
 hunter_default_version(termcolor VERSION 1.0.1)
 hunter_default_version(tf VERSION 1.12.0-p0)
 hunter_default_version(tf2 VERSION 0.6.5-p0)

cmake/projects/tcmalloc/hunter.cmake

@@ -0,0 +1,25 @@
+# Copyright (c) 2016-2020, Rahul Sheth, Ruslan Baratov
+# All rights reserved.
+
+# !!! DO NOT PLACE HEADER GUARDS HERE !!!
+
+include(hunter_add_version)
+include(hunter_cacheable)
+include(hunter_download)
+include(hunter_pick_scheme)
+
+hunter_add_version(
+    PACKAGE_NAME
+    tcmalloc
+    VERSION
+    "0.0.0-bc7995b-p0"
+    URL
+    "https://github.com/cpp-pm/tcmalloc/archive/0.0.0-bc7995b-p0.tar.gz"
+    SHA1
+    f42e1fec0ff66f3cb51648cc644efe3600b1b9f1
+)
+
+
+hunter_pick_scheme(DEFAULT url_sha1_cmake)
+hunter_cacheable(tcmalloc)
+hunter_download(PACKAGE_NAME tcmalloc)

docs/packages/pkg/tcmalloc.rst

@@ -0,0 +1,31 @@
+.. spelling::
+
+    tcmalloc
+    CMake
+    bazel
+
+.. index::
+  single: unsorted ; tcmalloc
+
+.. _pkg.tcmalloc:
+
+tcmalloc
+========
+
+-  `Official <https://github.com/google/tcmalloc>`__
+-  `Hunterized <https://github.com/cpp-pm/tcmalloc>`__
+-  `Example <https://github.com/cpp-pm/hunter/blob/master/examples/tcmalloc/CMakeLists.txt>`__
+-  Added by `Raffael Casagrande <https://github.com/craffael>`__ (`pr-493 <https://github.com/cpp-pm/hunter/pull/493>`__)
+
+.. literalinclude:: /../examples/tcmalloc/CMakeLists.txt
+  :language: cmake
+  :start-after: # DOCUMENTATION_START {
+  :end-before: # DOCUMENTATION_END }
+
+.. note::
+
+  * Because tcmalloc must be linked as an object library (:code:`alwayslink` in bazel) it is require to use at least CMake 3.21. 
+    See the corresponding note on `<https://cmake.org/cmake/help/latest/command/target_link_libraries.html#linking-object-libraries-via-target-objects>`__
+  * Because tcmalloc requires at least C++17 and because it depends on `abseil <https://github.com/abseil/abseil-cpp>`__, it is important to make sure that abseil is also built with C++17.
+    Otherwise you may get link time errors related to :code:`std::basic_string_view`.
+    The easiest way to achieve this is to use a :code:`CMAKE_TOOLCHAIN_FILE` that sets :code:`CMAKE_CXX_STANDARD` to :code:`17` or higher.

examples/tcmalloc/CMakeLists.txt

@@ -0,0 +1,18 @@
+# Copyright (c) 2016-2020, Rahul Sheth, Ruslan Baratov
+# All rights reserved.
+
+cmake_minimum_required(VERSION 3.2)
+
+# Emulate HunterGate:
+# * https://github.com/hunter-packages/gate
+include("../common.cmake")
+
+project(download-tcmalloc)
+
+# DOCUMENTATION_START {
+hunter_add_package(tcmalloc)
+find_package(tcmalloc CONFIG REQUIRED)
+
+add_executable(boo boo.cpp)
+target_link_libraries(boo PUBLIC tcmalloc::tcmalloc)
+# DOCUMENTATION_END }

examples/tcmalloc/boo.cpp

@@ -0,0 +1,6 @@
+#include <tcmalloc/malloc_extension.h>
+#include <iostream>
+
+int main() {
+  std::cout << tcmalloc::MallocExtension::GetStats() << std::endl;
+}