[DRAFT] New fee estimator

.cirrus.yml

@@ -1,34 +1,54 @@
 env:  # Global defaults
   CIRRUS_CLONE_DEPTH: 1
-  PACKAGE_MANAGER_INSTALL: "apt-get update && apt-get install -y"
+  CIRRUS_LOG_TIMESTAMP: true
   MAKEJOBS: "-j10"
   TEST_RUNNER_PORT_MIN: "14000"  # Must be larger than 12321, which is used for the http cache. See https://cirrus-ci.org/guide/writing-tasks/#http-cache
   CI_FAILFAST_TEST_LEAVE_DANGLING: "1"  # Cirrus CI does not care about dangling processes and setting this variable avoids killing the CI script itself on error
-  CCACHE_MAXSIZE: "200M"
-  CCACHE_DIR: "/tmp/ccache_dir"
-  CCACHE_NOHASHDIR: "1"  # Debug info might contain a stale path if the build dir changes, but this is fine
 
+# A self-hosted machine(s) can be used via Cirrus CI. It can be configured with
+# multiple users to run tasks in parallel. No sudo permission is required.
+#
 # https://cirrus-ci.org/guide/persistent-workers/
 #
-# It is possible to select a specific persistent worker by label. Refer to the
+# Generally, a persistent worker must run Ubuntu 23.04+ or Debian 12+.
+#
+# The following specific types should exist, with the following requirements:
+# - small: For an x86_64 machine, with at least 2 vCPUs and 8 GB of memory.
+# - medium: For an x86_64 machine, with at least 4 vCPUs and 16 GB of memory.
+# - arm64: For an aarch64 machine, with at least 2 vCPUs and 8 GB of memory.
+#
+# CI jobs for the latter configuration can be run on x86_64 hardware
+# by installing qemu-user-static, which works out of the box with
+# podman or docker. Background: https://stackoverflow.com/a/72890225/313633
+#
+# The above machine types are matched to each task by their label. Refer to the
 # Cirrus CI docs for more details.
 #
-# Generally, a persistent worker must run Ubuntu 23.04+ or Debian 12+.
-# Specifically,
-# - apt-get is required due to PACKAGE_MANAGER_INSTALL
-# - podman-docker-4.1+ is required due to the use of `podman` when
-#   RESTART_CI_DOCKER_BEFORE_RUN is set and 4.1+ due to the bugfix in 4.1
+# When a contributor maintains a fork of the repo, any pull request they make
+# to their own fork, or to the main repository, will trigger two CI runs:
+# one for the branch push and one for the pull request.
+# This can be avoided by setting SKIP_BRANCH_PUSH=true as a custom env variable
+# in Cirrus repository settings, accessible from
+# https://cirrus-ci.com/github/my-organization/my-repository
+#
+# On machines that are persisted between CI jobs, RESTART_CI_DOCKER_BEFORE_RUN=1
+# ensures that previous containers and artifacts are cleared before each run.
+# This requires installing Podman instead of Docker.
+#
+# Futhermore:
+# - podman-docker-4.1+ is required due to the bugfix in 4.1
 #   (https://github.com/bitcoin/bitcoin/pull/21652#issuecomment-1657098200)
-# - The ./ci/ depedencies (with cirrus-cli) should be installed:
+# - The ./ci/ dependencies (with cirrus-cli) should be installed. One-liner example
+#   for a single user setup with sudo permission:
 #
 #   ```
-#   apt update && apt install git screen python3 bash podman-docker curl -y && curl -L -o cirrus "https://github.com/cirruslabs/cirrus-cli/releases/latest/download/cirrus-linux-$(dpkg --print-architecture)" && mv cirrus /usr/local/bin/cirrus && chmod +x /usr/local/bin/cirrus
+#   apt update && apt install git screen python3 bash podman-docker uidmap slirp4netns curl -y && curl -L -o cirrus "https://github.com/cirruslabs/cirrus-cli/releases/latest/download/cirrus-linux-$(dpkg --print-architecture)" && mv cirrus /usr/local/bin/cirrus && chmod +x /usr/local/bin/cirrus
 #   ```
 #
-# - There are no strict requirements on the hardware, because having less CPUs
-#   runs the same CI script (maybe slower). To avoid rare and intermittent OOM
-#   due to short memory usage spikes, it is recommended to add (and persist)
-#   swap:
+# - There are no strict requirements on the hardware. Having fewer CPU threads
+#   than recommended merely causes the CI script to run slower.
+#   To avoid rare and intermittent OOM due to short memory usage spikes,
+#   it is recommended to add (and persist) swap:
 #
 #   ```
 #   fallocate -l 16G /swapfile_ci && chmod 600 /swapfile_ci && mkswap /swapfile_ci && swapon /swapfile_ci && ( echo '/swapfile_ci none swap sw 0 0' | tee -a /etc/fstab )
@@ -39,23 +59,20 @@ env:  # Global defaults
 #   ```
 #   RESTART_CI_DOCKER_BEFORE_RUN=1 screen cirrus worker run --labels type=todo_fill_in_type --token todo_fill_in_token
 #   ```
-#
-# The following specific types should exist, with the following requirements:
-# - small: For an x86_64 machine, recommended to have 2 CPUs and 8 GB of memory.
-# - medium: For an x86_64 machine, recommended to have 4 CPUs and 16 GB of memory.
-# - noble: For a machine running the Linux kernel shipped with exaclty Ubuntu Noble 24.04. The machine is recommended to have 4 CPUs and 16 GB of memory.
-# - arm64: For an aarch64 machine, recommended to have 2 CPUs and 8 GB of memory.
 
 # https://cirrus-ci.org/guide/tips-and-tricks/#sharing-configuration-between-tasks
 filter_template: &FILTER_TEMPLATE
-  skip: $CIRRUS_REPO_FULL_NAME == "bitcoin-core/gui" && $CIRRUS_PR == ""  # No need to run on the read-only mirror, unless it is a PR. https://cirrus-ci.org/guide/writing-tasks/#conditional-task-execution
+  # Allow forks to specify SKIP_BRANCH_PUSH=true and skip CI runs when a branch is pushed,
+  # but still run CI when a PR is created.
+  # https://cirrus-ci.org/guide/writing-tasks/#conditional-task-execution
+  skip: $SKIP_BRANCH_PUSH == "true" && $CIRRUS_PR == ""
   stateful: false  # https://cirrus-ci.org/guide/writing-tasks/#stateful-tasks
 
 base_template: &BASE_TEMPLATE
   << : *FILTER_TEMPLATE
   merge_base_script:
-    # Unconditionally install git (used in fingerprint_script).
-    - git --version || bash -c "$PACKAGE_MANAGER_INSTALL git"
+    # Require git (used in fingerprint_script).
+    - git --version || ( apt-get update && apt-get install -y git )
     - if [ "$CIRRUS_PR" = "" ]; then exit 0; fi
     - git fetch --depth=1 $CIRRUS_REPO_CLONE_URL "pull/${CIRRUS_PR}/merge"
     - git checkout FETCH_HEAD  # Use merged changes to detect silent merge conflicts
@@ -159,19 +176,6 @@ task:
   env:
     FILE_ENV: "./ci/test/00_setup_env_native_msan.sh"
 
-task:
-  name: 'ASan + LSan + UBSan + integer, no depends, USDT'
-  enable_bpfcc_script:
-    # In the image build step, no external environment variables are available,
-    # so any settings will need to be written to the settings env file:
-    - sed -i "s|\${CIRRUS_CI}|true|g" ./ci/test/00_setup_env_native_asan.sh
-  << : *GLOBAL_TASK_TEMPLATE
-  persistent_worker:
-    labels:
-      type: noble  # Must use this specific worker (needed for USDT functional tests)
-  env:
-    FILE_ENV: "./ci/test/00_setup_env_native_asan.sh"
-
 task:
   name: 'fuzzer,address,undefined,integer, no depends'
   << : *GLOBAL_TASK_TEMPLATE

.editorconfig

@@ -10,17 +10,17 @@ insert_final_newline = true
 trim_trailing_whitespace = true
 
 # Source code files
-[*.{h,cpp,py,sh}]
+[*.{h,cpp,rs,py,sh}]
 indent_size = 4
 
-# .cirrus.yml, .fuzzbuzz.yml, etc.
+# .cirrus.yml, etc.
 [*.yml]
 indent_size = 2
 
-# Makefiles
-[{*.am,Makefile.*.include}]
+# Makefiles (only relevant for depends build)
+[Makefile]
 indent_style = tab
 
-# Autoconf scripts
-[configure.ac]
+# CMake files
+[{CMakeLists.txt,*.cmake,*.cmake.in}]
 indent_size = 2