Files
solana/sdk/bpf/c
mergify[bot] 12eea11f93 Add entrypoint to run CI locally (backport #18131) (#18216)
* ci: use versioned cargo wrapper for crate ordering

(cherry picked from commit 554002b73c)

* ci: nvidia persistence mode isn't a hard requirement

(cherry picked from commit f213e48067)

* sdk: ensure `ld` can find criterion when running BPF tests

(cherry picked from commit 7ee39fcb0f)

* ci: give localnet nodes a more time to startup

(cherry picked from commit 278a241db3)

* ci: add downstream build wrapper

(cherry picked from commit 761e324982)

* ci: add wrapper script for running ci locally

Linux only for now

(cherry picked from commit 0bc38153ca)

Co-authored-by: Trent Nelson <trent@solana.com>
2021-06-25 05:18:15 +00:00
..
2021-03-10 18:13:38 +01:00
2019-06-17 11:04:38 -07:00

Development

Quick start

To get started create a makefile containing:

include path/to/bpf.mk

and src/program.c containing:

#include <solana_sdk.h>

bool entrypoint(const uint8_t *input) {
  SolKeyedAccount ka[1];
  uint8_t *data;
  uint64_t data_len;

  if (!sol_deserialize(buf, ka, SOL_ARRAY_SIZE(ka), NULL, &data, &data_len)) {
    return false;
  }
  print_params(1, ka, data, data_len);
  return true;
}

Then run make to build out/program.o. Run make help for more details.

Unit tests

Built-in support for unit testing is provided by the Criterion test framework. To get started create the file test/example.c containing:

#include <criterion/criterion.h>
#include "../src/program.c"

Test(test_suite_name, test_case_name) {
  cr_assert(true);
}

Then run make test.

Limitations

  • Programs must be fully contained within a single .c file
  • No libc is available but solana_sdk.h provides a minimal set of primitives