adopt percentile aggregation so it copes with values >1000ms

.cirrus.yml

@@ -0,0 +1,225 @@
+env:
+  LANG: C
+  CIRRUS_CLONE_DEPTH: 1
+  DEFAULT_CONFIG_OPTS: --enable-debug --without-libstatgrab --disable-dependency-tracking
+
+
+###
+# make distcheck and other sanity checks
+#
+release_ready_task:
+  container:
+    image: collectd/ci:stretch_amd64
+  lint_script:
+    - /checks/check-bashisms.sh
+    - /checks/check-pod.sh
+  configure_script:
+    - ./build.sh
+    - ./configure $DEFAULT_CONFIG_OPTS
+  checks_script:
+    - make -j2 -s distcheck DISTCHECK_CONFIGURE_FLAGS="${DEFAULT_CONFIG_OPTS}"
+
+###
+# Default toolchain and build flags used in deb packages, on a range of Debian
+# and Ubuntu releases (+ Debian/unstable)
+# Most should succeed, and PRs shouldn't break them.
+#
+debian_default_toolchain_task:
+  matrix:
+    - allow_failures: false
+      container:
+        image: collectd/ci:jessie_amd64
+    - allow_failures: false
+      container:
+        image: collectd/ci:stretch_amd64
+    - allow_failures: false
+      container:
+        image: collectd/ci:stretch_i386
+    - allow_failures: false
+      container:
+        image: collectd/ci:trusty_amd64
+    - allow_failures: false
+      container:
+        image: collectd/ci:xenial_amd64
+    # debian/unstable is expected to fail
+    - allow_failures: true
+      skip_notifications: true
+      only_if: $CIRRUS_BRANCH == 'master'
+      container:
+        image: collectd/ci:sid_amd64
+  configure_script:
+    - ./build.sh
+    - gcc --version
+    - >
+      ./configure CC=gcc $DEFAULT_CONFIG_OPTS
+      CFLAGS="$(dpkg-buildflags --get CFLAGS)"
+      CPPLAGS="$(dpkg-buildflags --get CPPFLAGS)"
+      LDFLAGS="$(dpkg-buildflags --get LDFLAGS)"
+  build_script:
+    - make -j2 -sk
+  tests_script:
+    - make -j2 -sk check
+    - /checks/check-built-plugins.sh
+
+###
+# Default toolchain and build flags used in RPM packages, on a range of RedHat
+# and Fedora releases (+ Fedora/rawhide)
+# Most should succeed, and PRs shouldn't break them.
+#
+redhat_default_toolchain_task:
+  matrix:
+    - allow_failures: false
+      skip_notifications: false
+      container:
+        image: collectd/ci:el6_x86_64
+    - allow_failures: true
+      skip_notifications: true
+      container:
+        image: collectd/ci:el7_x86_64 # TODO: fix this platform
+    - allow_failures: true
+      skip_notifications: true
+      container:
+        image: collectd/ci:fedora28_x86_64
+    # fedora/rawhide is expected to fail
+    - allow_failures: true
+      skip_notifications: true
+      only_if: $CIRRUS_BRANCH == 'master'
+      container:
+        image: collectd/ci:fedora_rawhide_x86_64
+  configure_script:
+    - ./build.sh
+    - gcc --version
+    - ./configure CC=gcc $DEFAULT_CONFIG_OPTS CFLAGS="$(rpm --eval '%optflags')"
+  build_script:
+    - make -j2 -sk
+  tests_script:
+    - make -j2 -sk check
+    - /checks/check-built-plugins.sh
+
+
+###
+# Misc non-standard build environment & options on most recent released debian
+# version.
+# Some are expected to fail, others should always pass
+non_standard_toolchains_task:
+  container:
+    image: collectd/ci:stretch_amd64
+  only_if: $CIRRUS_PR == ''
+
+  matrix:
+
+    # build using clang with default build flags, should always pass
+    - env:
+        LABEL: clang
+      allow_failures: true # TODO: fix this platform
+      skip_notifications: true
+      configure_script:
+        - ./build.sh
+        - clang --version
+        - >
+          ./configure CC=clang CXX=clang++
+          $DEFAULT_CONFIG_OPTS
+          CFLAGS="$(dpkg-buildflags --get CFLAGS)"
+          CPPLAGS="$(dpkg-buildflags --get CPPFLAGS)"
+          LDFLAGS="$(dpkg-buildflags --get LDFLAGS)"
+      build_script:
+        - make -j2 -sk
+      tests_script:
+        - make -j2 -sk check
+
+    # build against libstatgrab, should always pass
+    - env:
+        LABEL: statgrab
+      allow_failures: false
+      skip_notifications: false
+      configure_script:
+        - ./build.sh
+        - gcc --version
+        - >
+          ./configure --with-libstatgrab --enable-debug
+          CFLAGS="$(dpkg-buildflags --get CFLAGS)"
+          CPPLAGS="$(dpkg-buildflags --get CPPFLAGS)"
+          LDFLAGS="$(dpkg-buildflags --get LDFLAGS)"
+      build_script:
+        - make -j2 -sk
+      tests_script:
+        - >
+          for i in cpu disk interface load memory swap users; do
+            if ! $(ldd ".libs/${i}.so" 2>/dev/null | grep -q 'libstatgrab.so'); then
+              echo "plugin $i NOT linked against libstatgrab"
+              exit 1
+            fi
+          done
+
+    # build using clang with a collection of strict build flags, will most
+    # probably always fail
+    - env:
+        LABEL: clang strict
+      allow_failures: true
+      skip_notifications: true
+      configure_script:
+        - ./build.sh
+        - clang --version
+        - >
+          ./configure CC=clang CXX=clang++
+          $DEFAULT_CONFIG_OPTS
+          CFLAGS='-Wall
+          -Wno-error
+          -Wextra
+          -Wformat=2
+          -Wformat-security
+          -Wformat-nonliteral
+          -Wmissing-include-dirs
+          -Wold-style-definition
+          -Wpointer-arith
+          -Winit-self
+          -Wmissing-prototypes
+          -Wimplicit-function-declaration
+          -Wmissing-declarations
+          -Wstrict-prototypes
+          -Wmissing-noreturn
+          -Wshadow
+          -Wendif-labels
+          -Wwrite-strings
+          -Wno-unused-parameter
+          -Wno-missing-field-initializers
+          -Wdate-time
+          -Wnested-externs
+          -Wno-typedef-redefinition
+          -Wno-gnu-variable-sized-type-not-at-end'
+      build_script:
+        - make -j2 -sk
+      tests_script:
+        - make -j2 -sk check
+
+###
+# Build using a range of compilers, available in debian/unstable. NB: might
+# fail because of changes to the distro, not the compiler used.
+#
+bleeding_edge_compilers_task:
+  container:
+    image: collectd/ci:sid_amd64
+  only_if: $CIRRUS_BRANCH == 'master'
+  allow_failures: true
+  skip_notifications: true
+  env:
+    matrix:
+      CC: gcc-7
+      CC: gcc-8
+      CC: clang-6.0
+      CC: clang-7
+      CC: clang-8
+      CC: clang-9
+  configure_script:
+    - ./build.sh
+    - $CC --version
+    - >
+      ./configure CC=$CC
+      $DEFAULT_CONFIG_OPTS
+      CFLAGS="$(dpkg-buildflags --get CFLAGS)"
+      CPPLAGS="$(dpkg-buildflags --get CPPFLAGS)"
+      LDFLAGS="$(dpkg-buildflags --get LDFLAGS)"
+  build_script:
+    - make -j2 -sk
+  tests_script:
+    - make -j2 -sk check

.clang-format

@@ -0,0 +1,5 @@
+---
+BasedOnStyle: LLVM
+IncludeCategories:
+  - Regex: '"collectd.h"'
+  - Priority: -1

.github/issue_template.md

@@ -0,0 +1,17 @@
+*   Version of collectd:
+*   Operating system / distribution:
+*   Kernel version (if applicable):
+
+## Expected behavior
+
+(Description of the behavior / output that you expected)
+
+## Actual behavior
+
+(Description of the behavior / output that you observed)
+
+## Steps to reproduce
+
+*   step 1
+*   step 2
+*   step 3

.gitignore

@@ -4,6 +4,7 @@ Makefile.in
 /aclocal.m4
 /autom4te.cache
 /autom4te.cache
+/build-aux/
 /compile
 /config.guess
 /config.sub
@@ -12,15 +13,21 @@ Makefile.in
 /install-sh
 /libltdl/
 /ltmain.sh
+/m4/libtool.m4
+/m4/ltargz.m4
+/m4/ltdl.m4
+/m4/lt~obsolete.m4
+/m4/ltoptions.m4
+/m4/ltsugar.m4
+/m4/ltversion.m4
 /missing
-src/config.h.in
+/src/config.h.in
 
 # configure stuff:
 Makefile
 config.log
 config.status
 libtool
-src/.deps
 src/collectd.conf
 src/config.h
 src/libcollectdclient/libcollectdclient.pc
@@ -30,14 +37,16 @@ src/stamp-h1
 *.la
 *.lo
 *.o
+.dirstamp
 .libs/
-src/collectd
-src/collectd-nagios
-src/collectd-tg
-src/collectdctl
-src/collectdmon
+.deps/
+/collectd-nagios
+/collectd-tg
+/collectdctl
+/collectdmon
 src/*.1
 src/*.5
+src/.pod2man.tmp.*
 src/libcollectdclient/collectd/lcc_features.h
 
 # patch stuff
@@ -51,28 +60,48 @@ src/liboconfig/parser.h
 src/liboconfig/scanner.c
 
 # protobuf stuff:
-src/*.pb-c.[ch]
+*.pb-c.[ch]
+*.grpc.pb.cc
+*.pb.cc
+*.pb.h
 
 # make dist stuff:
 /collectd-*.tar.gz
 /collectd-*.tar.bz2
 
 # perl stuff:
-bindings/.perl-directory-stamp
+/.perl-directory-stamp
 bindings/perl/Collectd/pm_to_blib
 bindings/perl/blib/
 bindings/perl/pm_to_blib
+/buildperl
 
 # java stuff
-bindings/java/java-build-stamp
-bindings/java/org/collectd/api/*.class
-bindings/java/org/collectd/java/*.class
+*.jar
+/org/collectd/api/*.class
+/org/collectd/java/*.class
+/bindings/java/java-build-stamp
+/classnoinst.stamp
 
 # python stuff
 *.pyc
 
-# tag stuff
-src/tags
-
 # backup stuff
 *~
+
+# lint stuff
+*.ln
+
+#ide stuff
+.vscode
+
+# cscope stuff
+cscope.*
+
+# Unit tests
+test-suite.log
+src/tests/
+test_*
+
+# src/daemon/...
+/collectd

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "gnulib"]
+	path = gnulib
+	url = git://git.savannah.gnu.org/gnulib.git